ASTROSAT CZTI

Data Quality Report

Orbit 57382

Creation date: 2026-05-07T03:42:05.398706
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_102T01_9000006572_57382cztM0_level2.fits modeM0/AS1A14_102T01_9000006572_57382cztM0_level2_quad_clean.evt
Size (bytes)448,977,60087,842,880
Size428.2 MB 83.8 MB
Events in quadrant A3,152,754569,633
Events in quadrant B3,383,578603,323
Events in quadrant C6,216,318507,601
Events in quadrant D3,331,553499,307

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146211
B0149011
C0233181
D0151221

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6887230.333963%
B6888650.943670%
C68886319.160859%
D6888590.856562%

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 7758 7160 6 6 0.08% 0.08%
B 7759 7161 19 19 0.24% 0.27%
C 7759 7161 603 603 7.77% 8.42%
D 7759 7161 46 46 0.59% 0.64%

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 10 248 180905 993.55 734 716 181.4
A 3 14 57644 313.9 734 716 181.4
A 0 8 26465 141.98 734 716 181.4
B 0 216 188386 1222.05 724 697 153.6
B 7 252 92870 600.14 724 697 153.6
B 5 185 58271 374.87 724 697 153.6
C 15 224 2865710 15426.49 680 673 185.7
C 14 254 480571 2583.96 680 673 185.7
C 12 250 75187 401.21 680 673 185.7
D 2 249 130382 659.6 699 669 196.7
D 2 31 102351 517.06 699 669 196.7
D 3 12 83807 422.76 699 669 196.7

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