ASTROSAT CZTI

Data Quality Report

Orbit 54089

Creation date: 2025-09-28T11:49:30.990136
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_041T01_9000006510_54089cztM0_level2.fits modeM0/AS1A14_041T01_9000006510_54089cztM0_level2_quad_clean.evt
Size (bytes)1,428,022,080273,409,920
Size1.3 GB 260.7 MB
Events in quadrant A12,680,2161,728,652
Events in quadrant B10,330,1491,945,586
Events in quadrant C10,972,1191,725,669
Events in quadrant D17,338,5711,506,555

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04040
B04040
C04040
D04040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0524053
B0454393
C0471743
D0651373

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1990612896.475435%
B199077663.847893%
C199074292.155021%
D1990715287.675692%

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 21051 19909 807 807 3.83% 4.05%
B 21052 19910 226 226 1.07% 1.14%
C 21052 19910 184 184 0.87% 0.92%
D 21052 19910 1129 1129 5.36% 5.67%

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 15 174 3272690 6388.95 2085 2031 511.9
A 0 8 303364 588.63 2085 2031 511.9
A 4 5 296911 576.02 2085 2031 511.9
B 0 213 511244 1135.75 2102 2026 448.4
B 5 236 340025 753.86 2102 2026 448.4
B 7 252 285419 632.07 2102 2026 448.4
C 1 16 1260911 2236.91 2061 2040 562.8
C 13 3 639520 1132.75 2061 2040 562.8
C 12 252 193356 339.95 2061 2040 562.8
D 2 165 3881701 6850.11 2004 1917 566.4
D 8 176 2837910 5007.2 2004 1917 566.4
D 12 34 669904 1179.39 2004 1917 566.4

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