ASTROSAT CZTI

Data Quality Report

Orbit 20210305_T03_282T01_9000004226_level2

Creation date: 2025-12-22T13:56:44.350968
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/AS1T03_282T01_9000004226cztM0_level2.fits modeM0/AS1T03_282T01_9000004226cztM0_level2_quad_clean.evt
Size (bytes)45,247,68026,752,320
Size43.2 MB 25.5 MB
Events in quadrant A286,884136,898
Events in quadrant B274,636137,528
Events in quadrant C270,554123,315
Events in quadrant D217,60891,081

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0920
B0920
C0920
D0920

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A099780
B099360
C0115770
D0216430

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A45571182.589423%
B45571312.874698%
C45574419.677419%
D4557121826.728111%

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 5582 4557 0 0 0.00% 0.00%
B 5582 4557 0 0 0.00% 0.00%
C 5582 4557 0 0 0.00% 0.00%
D 5582 4544 0 0 0.00% 0.00%

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 29 292 11.1 74 71 19.9
A 7 110 253 9.14 74 71 19.9
A 14 95 220 7.49 74 71 19.9
B 2 9 227 9.51 72 69 16.6
B 5 128 201 7.95 72 69 16.6
B 2 8 201 7.95 72 69 16.6
C 1 80 217 7.63 71 67 19.7
C 1 81 213 7.43 71 67 19.7
C 3 187 201 6.82 71 67 19.7
D 10 113 165 5.91 62 56 18.5
D 4 246 162 5.74 62 56 18.5
D 10 189 161 5.69 62 56 18.5

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