ASTROSAT CZTI

Data Quality Report

Orbit 59104

Creation date: 2026-08-31T01:12:18.111777
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_004T02_9000006600_59104cztM0_level2.fits modeM0/AS1A14_004T02_9000006600_59104cztM0_level2_quad_clean.evt
Size (bytes)760,152,96079,182,720
Size724.9 MB 75.5 MB
Events in quadrant A3,760,070646,559
Events in quadrant B4,146,915673,247
Events in quadrant C3,942,560612,427
Events in quadrant D15,770,154130

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160182
B0168922
C0164982
D0513112

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66611392.086774%
B66612543.813241%
C66621342.011408%
D6662666199.984989%

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 7611 6662 12 12 0.16% 0.18%
B 7611 6662 142 142 1.87% 2.13%
C 7612 6663 40 40 0.53% 0.60%
D 7612 6663 5222 5222 68.60% 78.37%

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 421597 2325.61 728 710 181.0
A 15 233 340445 1877.2 728 710 181.0
A 10 251 78364 429.08 728 710 181.0
B 5 236 642012 4150.49 716 690 154.5
B 4 236 279550 1804.72 716 690 154.5
B 0 197 109314 702.99 716 690 154.5
C 3 233 856960 4421.42 711 705 193.7
C 12 252 141110 725.01 711 705 193.7
C 13 3 39447 200.05 711 705 193.7
D 12 1 15130360 808107.83 60 57 18.7
D 11 129 139611 7453.56 60 57 18.7
D 2 249 54133 2888.19 60 57 18.7

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