ASTROSAT CZTI

Data Quality Report

Orbit 56629

Creation date: 2026-03-17T13:05:13.799938
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_083T06_9000006558_56629cztM0_level2.fits modeM0/AS1A14_083T06_9000006558_56629cztM0_level2_quad_clean.evt
Size (bytes)577,886,400119,243,520
Size551.1 MB 113.7 MB
Events in quadrant A6,076,296758,355
Events in quadrant B4,733,994849,262
Events in quadrant C5,120,625711,689
Events in quadrant D4,798,189698,875

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01700
B01700
C01700
D01700

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0242220
B0201650
C0214500
D0204370

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A85285556.507974%
B85292552.989800%
C85294615.405089%
D85291531.793880%

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 8528 8528 430 430 5.04% 5.04%
B 8529 8529 120 120 1.41% 1.41%
C 8529 8529 391 391 4.58% 4.58%
D 8529 8529 119 119 1.40% 1.40%

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 10 251 1253114 5755.54 890 867 217.6
A 7 64 1114094 5116.58 890 867 217.6
A 13 248 147666 674.71 890 867 217.6
B 5 185 439773 2227.21 909 871 197.1
B 0 231 217902 1101.32 909 871 197.1
B 4 21 167870 847.44 909 871 197.1
C 15 230 1126657 4722.1 876 867 238.4
C 1 16 123915 516.12 876 867 238.4
C 6 223 104625 435.21 876 867 238.4
D 7 96 327163 1326.36 881 840 246.0
D 2 62 303929 1231.93 881 840 246.0
D 2 249 156958 634.55 881 840 246.0

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