ASTROSAT CZTI

Data Quality Report

Orbit 52482

Creation date: 2025-06-25T17:23:53.971274
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/AS1A13_037T01_9000006476_52482cztM0_level2.fits modeM0/AS1A13_037T01_9000006476_52482cztM0_level2_quad_clean.evt
Size (bytes)818,072,64076,682,880
Size780.2 MB 73.1 MB
Events in quadrant A3,018,891640,845
Events in quadrant B3,706,839693,062
Events in quadrant C6,820,250535,166
Events in quadrant D16,239,0575,902

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135862
B0156232
C0246842
D0526755

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6404260.405996%
B64041392.170518%
C6404101115.787008%
D6403634799.125410%

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 7614 6405 3 3 0.04% 0.05%
B 7614 6405 27 27 0.35% 0.42%
C 7614 6405 828 828 10.87% 12.93%
D 7612 6402 6090 6090 80.01% 95.13%

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 8 249 95293 548.93 696 680 172.4
A 3 14 82871 476.86 696 680 172.4
A 4 3 42140 240.55 696 680 172.4
B 10 254 656149 4366.3 695 671 150.1
B 4 81 50443 331.54 695 671 150.1
B 0 171 45460 298.35 695 671 150.1
C 12 254 1488468 8352.98 642 638 178.1
C 15 224 881209 4943.7 642 638 178.1
C 2 12 717081 4022.26 642 638 178.1
D 15 93 15427468 382084.34 134 127 40.4
D 6 42 97695 2416.44 134 127 40.4
D 7 96 60462 1494.3 134 127 40.4

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