ASTROSAT CZTI

Data Quality Report

Orbit 53668

Creation date: 2025-08-30T07:32:07.660717
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_022T05_9000006504_53668cztM0_level2.fits modeM0/AS1A14_022T05_9000006504_53668cztM0_level2_quad_clean.evt
Size (bytes)3,119,561,280175,112,640
Size2.9 GB 167.0 MB
Events in quadrant A41,102,348495,984
Events in quadrant B12,889,1961,737,265
Events in quadrant C36,340,725665,332
Events in quadrant D23,728,8581,130,142

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03760
B03760
C03760
D03760

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01348833
B0512273
C01204993
D0832633

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A184431377274.673318%
B1844411786.386901%
C184441155162.627413%
D18443484426.264707%

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 20097 18444 13026 13026 64.82% 70.62%
B 20099 18446 806 806 4.01% 4.37%
C 20099 18445 10469 10469 52.09% 56.76%
D 20098 18446 4356 4356 21.67% 23.61%

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 63 20974147 73040.8 1142 1115 287.1
A 3 78 12047818 41953.92 1142 1115 287.1
A 14 254 1271159 4423.06 1142 1115 287.1
B 10 20 2117106 5309.01 1888 1821 398.4
B 5 172 1118520 2802.73 1888 1821 398.4
B 5 185 748697 1874.53 1888 1821 398.4
C 1 241 16962433 49756.31 1220 1206 340.9
C 15 224 11037573 32375.54 1220 1206 340.9
C 2 12 1024451 3001.72 1220 1206 340.9
D 8 176 8107388 16793.92 1644 1563 482.7
D 10 172 3722298 7708.74 1644 1563 482.7
D 2 37 1407809 2913.51 1644 1563 482.7

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