ASTROSAT CZTI

Data Quality Report

Orbit 57412

Creation date: 2026-05-09T04:30:03.239356
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_102T01_9000006572_57412cztM0_level2.fits modeM0/AS1A14_102T01_9000006572_57412cztM0_level2_quad_clean.evt
Size (bytes)673,096,32097,168,320
Size641.9 MB 92.7 MB
Events in quadrant A8,300,766627,189
Events in quadrant B3,571,709672,800
Events in quadrant C7,735,672535,916
Events in quadrant D4,713,894572,098

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300780
B0163330
C0283430
D0193990

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A766981810.666319%
B7669750.977963%
C7669124916.286348%
D76702122.764016%

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 7954 7944 769 769 9.67% 9.68%
B 7954 7954 9 9 0.11% 0.11%
C 7954 7946 1014 1014 12.75% 12.76%
D 7955 7955 170 170 2.14% 2.14%

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 0 12 3920338 19973.74 803 782 196.2
A 10 251 1173843 5977.82 803 782 196.2
A 13 248 40300 201.38 803 782 196.2
B 0 216 88274 498.68 817 784 175.4
B 7 252 52047 292.19 817 784 175.4
B 10 247 43325 242.48 817 784 175.4
C 15 224 4251761 21224.47 736 727 200.3
C 6 223 183613 913.11 736 727 200.3
C 14 254 153642 763.47 736 727 200.3
D 8 240 684324 3070.27 786 752 222.6
D 7 96 261649 1171.82 786 752 222.6
D 3 12 163371 730.41 786 752 222.6

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