ASTROSAT CZTI

Data Quality Report

Orbit 23284

Creation date: 2024-06-27T18:52:19.281357
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/AS1C05_005T01_9000003440_23284cztM0_level2.evt modeM0/AS1C05_005T01_9000003440_23284cztM0_level2_quad_clean.evt
Size (bytes)1,404,910,080287,403,840
Size1.3 GB 274.1 MB
Events in quadrant A9,698,3861,826,347
Events in quadrant B9,989,4371,860,332
Events in quadrant C10,304,2521,789,029
Events in quadrant D11,106,9461,754,840

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04340
B04340
C04340
D04340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0436594
B0439864
C0451344
D0484434

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A214181080.504249%
B214191540.718988%
C214193491.629394%
D214192811.311919%

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 22713 21421 0 0 0.00% 0.00%
B 22714 21422 2 2 0.01% 0.01%
C 22714 21423 70 70 0.31% 0.33%
D 22714 21423 171 171 0.75% 0.80%

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 13 254 33182 60.91 2512 2453 504.5
A 3 137 22854 40.44 2512 2453 504.5
A 0 226 21396 37.55 2512 2453 504.5
B 4 206 77285 157.98 2508 2442 473.8
B 12 111 59676 120.81 2508 2442 473.8
B 11 111 52575 105.82 2508 2442 473.8
C 10 9 433809 768.8 2411 2427 561.1
C 14 238 384004 680.03 2411 2427 561.1
C 2 16 48960 82.93 2411 2427 561.1
D 1 52 607587 1022.48 2441 2370 591.9
D 12 233 322404 540.68 2441 2370 591.9
D 7 238 284797 477.14 2441 2370 591.9

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