ASTROSAT CZTI

Data Quality Report

Orbit 11262

Creation date: 2024-06-27T16:10:23.318488
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/AS1A04_080T01_9000001644_11262cztM0_level2.evt modeM0/AS1A04_080T01_9000001644_11262cztM0_level2_quad_clean.evt
Size (bytes)434,822,40050,342,400
Size414.7 MB 48.0 MB
Events in quadrant A2,904,472307,843
Events in quadrant B2,961,441311,649
Events in quadrant C2,109,810316,898
Events in quadrant D4,890,507273,979

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115442
B0117361
C092331
D0176591

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0900
B0900
C0900
D0900

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A44611683.765972%
B44612455.492042%
C4461300.672495%
D44613317.419861%

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 5641 4462 96 96 1.70% 2.15%
B 5641 4462 116 116 2.06% 2.60%
C 5641 4462 4 4 0.07% 0.09%
D 5641 4462 180 180 3.19% 4.03%

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 14 238 355789 3224.5 535 525 110.2
A 13 251 221580 2006.37 535 525 110.2
A 8 5 153810 1391.27 535 525 110.2
B 4 239 632197 6036.14 540 527 104.6
B 11 51 66380 629.28 540 527 104.6
B 0 168 62383 591.09 540 527 104.6
C 9 204 24898 194.92 533 536 125.0
C 5 239 4158 28.98 533 536 125.0
C 13 61 3902 26.93 533 536 125.0
D 1 52 2166153 17762.74 506 491 121.9
D 10 253 380909 3120.18 506 491 121.9
D 8 195 172444 1410.36 506 491 121.9

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