ASTROSAT CZTI

Data Quality Report

Orbit 20191017_A07_100T03_9000003242_level2

Creation date: 2025-12-04T18:32:38.640341
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/AS1A07_100T03_9000003242cztM0_level2.fits modeM0/AS1A07_100T03_9000003242cztM0_level2_quad_clean.evt
Size (bytes)1,461,165,1201,774,287,360
Size1.4 GB 1.7 GB
Events in quadrant A9,001,17411,389,349
Events in quadrant B8,543,68611,199,285
Events in quadrant C8,948,65811,148,293
Events in quadrant D7,533,0269,784,447

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03416260
B03497540
C03139560
D04358070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030260
B030260
C030260
D030260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02460
B02460
C02460
D02460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A14918036272.431291%
B14918057753.871162%
C14918023031.543773%
D149180109967.370961%

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 172790 149154 0 0 0.00% 0.00%
B 172790 149136 0 0 0.00% 0.00%
C 172790 149158 0 0 0.00% 0.00%
D 172790 149012 0 0 0.00% 0.00%

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 29 8634 11.27 2345 2211 570.0
A 7 110 7211 8.77 2345 2211 570.0
A 0 30 6729 7.93 2345 2211 570.0
B 2 9 6819 10.6 2265 2168 438.6
B 2 8 5737 8.14 2265 2168 438.6
B 5 128 5687 8.02 2265 2168 438.6
C 3 234 6271 6.79 2363 2227 595.2
C 12 241 6179 6.64 2363 2227 595.2
C 3 126 6055 6.43 2363 2227 595.2
D 10 189 5439 6.21 2149 1967 559.0
D 6 67 5321 6.0 2149 1967 559.0
D 6 231 5293 5.95 2149 1967 559.0

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