ASTROSAT CZTI

Data Quality Report

Orbit 53254

Creation date: 2025-08-02T08:42:06.109798
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/AS1C09_011T08_9000006492_53254cztM0_level2.fits modeM0/AS1C09_011T08_9000006492_53254cztM0_level2_quad_clean.evt
Size (bytes)713,813,76086,353,920
Size680.7 MB 82.4 MB
Events in quadrant A4,014,940634,423
Events in quadrant B3,897,555687,708
Events in quadrant C13,672,988242,163
Events in quadrant D4,313,628579,780

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0169232
B0165482
C0452023
D0176802

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67462663.943077%
B67462383.528017%
C6745438665.025945%
D67452313.424759%

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 7886 6747 212 212 2.69% 3.14%
B 7886 6747 162 162 2.05% 2.40%
C 7885 6745 4122 4122 52.28% 61.11%
D 7885 6746 229 229 2.90% 3.39%

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 8 567914 3308.19 679 661 171.5
A 4 249 289082 1682.05 679 661 171.5
A 7 206 164241 953.99 679 661 171.5
B 2 249 421595 2920.27 682 660 144.1
B 4 81 368977 2555.23 682 660 144.1
B 4 171 84247 579.89 682 660 144.1
C 1 241 4985858 43619.72 413 409 114.3
C 15 165 3442240 30113.98 413 409 114.3
C 15 224 2095606 18331.73 413 409 114.3
D 11 245 340972 1795.9 661 632 189.5
D 12 17 282961 1489.79 661 632 189.5
D 12 3 185727 976.71 661 632 189.5

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