ASTROSAT CZTI

Data Quality Report

Orbit 56322

Creation date: 2026-02-24T22:16:45.646475
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_049T01_9000006552_56322cztM0_level2.fits modeM0/AS1A14_049T01_9000006552_56322cztM0_level2_quad_clean.evt
Size (bytes)2,828,168,640285,252,480
Size2.6 GB 272.0 MB
Events in quadrant A46,174,2661,100,303
Events in quadrant B17,447,6692,340,766
Events in quadrant C15,276,6652,164,884
Events in quadrant D23,911,5811,355,375

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04940
B04940
C04940
D04940

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0270
C0270
D0270

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01538794
B0689704
C0629044
D0879534

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A243321375356.522275%
B2433222849.386816%
C2433213195.420845%
D24332876436.018412%

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 26667 24336 12357 12357 46.34% 50.78%
B 26667 24336 1329 1329 4.98% 5.46%
C 26667 24336 730 730 2.74% 3.00%
D 26666 24334 3397 3397 12.74% 13.96%

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 11 31 26304281 49446.22 2143 2088 531.9
A 4 95 4821492 9060.13 2143 2088 531.9
A 4 249 1629820 3060.02 2143 2088 531.9
B 5 172 2808685 5238.21 2546 2451 535.7
B 5 185 1801944 3358.99 2546 2451 535.7
B 0 231 832879 1550.1 2546 2451 535.7
C 12 252 2256611 3275.93 2536 2509 688.1
C 15 198 1877773 2725.36 2536 2509 688.1
C 15 244 180830 259.16 2536 2509 688.1
D 8 129 12554867 23992.0 1816 1731 523.2
D 2 249 1072183 2045.88 1816 1731 523.2
D 6 239 873470 1666.1 1816 1731 523.2

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