ASTROSAT CZTI

Data Quality Report

Orbit 57987

Creation date: 2026-06-16T20:36:10.372871
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_031T01_9000006584_57987cztM0_level2.fits modeM0/AS1A14_031T01_9000006584_57987cztM0_level2_quad_clean.evt
Size (bytes)423,452,16090,037,440
Size403.8 MB 85.9 MB
Events in quadrant A4,244,107570,339
Events in quadrant B4,131,572627,096
Events in quadrant C3,400,549563,751
Events in quadrant D3,425,665540,321

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0168871
B0163871
C0143943
D0143241

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60804497.384868%
B60813095.081401%
C60801512.483553%
D6080751.233553%

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 7145 6081 265 265 3.71% 4.36%
B 7145 6081 201 201 2.81% 3.31%
C 7144 6080 106 106 1.48% 1.74%
D 7145 6081 44 44 0.62% 0.72%

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 1523594 9201.09 665 648 165.5
A 3 14 113679 682.89 665 648 165.5
A 13 248 26392 155.54 665 648 165.5
B 10 128 1114623 7945.94 657 633 140.2
B 4 201 110997 787.21 657 633 140.2
B 5 185 39942 280.39 657 633 140.2
C 15 224 707061 3930.84 648 643 179.7
C 12 252 74222 409.43 648 643 179.7
C 6 223 65962 363.47 648 643 179.7
D 12 110 526104 2808.54 654 625 187.1
D 8 240 82047 435.18 654 625 187.1
D 2 31 52493 277.22 654 625 187.1

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