ASTROSAT CZTI

Data Quality Report

Orbit 58715

Creation date: 2026-08-04T21:59:25.907410
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A14_004T06_9000006594_58715cztM0_level2.fits modeM0/AS1A14_004T06_9000006594_58715cztM0_level2_quad_clean.evt
Size (bytes)3,503,145,600542,079,360
Size3.3 GB 517.0 MB
Events in quadrant A20,877,0853,795,546
Events in quadrant B24,091,1863,947,880
Events in quadrant C21,164,5483,619,831
Events in quadrant D60,496,0762,339,386

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0898887
B0985887
C0916127
D02068707

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08020
B08020
C08020
D08020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0550
B0550
C0550
D0550

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A394517741.961927%
B3945219404.917368%
C3945211412.892122%
D394521478737.480990%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 44852 39454 249 249 0.56% 0.63%
B 44853 39455 888 888 1.98% 2.25%
C 44853 39457 795 795 1.77% 2.01%
D 44852 39452 13089 13089 29.18% 33.18%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 3 14 1797105 1676.33 4353 4248 1069.5
A 12 114 1726273 1610.1 4353 4248 1069.5
A 10 251 310374 286.23 4353 4248 1069.5
B 6 255 1939739 2142.75 4223 4056 903.4
B 5 172 1362438 1503.7 4223 4056 903.4
B 8 234 1077765 1188.57 4223 4056 903.4
C 12 249 1522240 1333.74 4206 4173 1138.2
C 13 3 825374 721.49 4206 4173 1138.2
C 12 252 643552 561.74 4206 4173 1138.2
D 11 129 36065612 35344.54 3546 3369 1020.3
D 2 249 3047137 2983.19 3546 3369 1020.3
D 2 62 2714361 2657.04 3546 3369 1020.3

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter

TCT plots

Parameter TCT0 TCT_healed
Tct