ASTROSAT CZTI

Data Quality Report

Orbit 15501

Creation date: 2024-06-27T17:09:29.818197
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/AS1T02_078T01_9000002294_15501cztM0_level2.evt modeM0/AS1T02_078T01_9000002294_15501cztM0_level2_quad_clean.evt
Size (bytes)323,009,28070,231,680
Size308.0 MB 67.0 MB
Events in quadrant A2,091,521470,354
Events in quadrant B2,243,836473,092
Events in quadrant C2,193,558460,170
Events in quadrant D2,981,455441,599

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0800
B0800
C0800
D0800

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A086690
B091670
C090110
D0115460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3991110.275620%
B3991320.801804%
C3991250.626409%
D39911343.357554%

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 3992 3992 1 1 0.03% 0.03%
B 3992 3992 22 22 0.55% 0.55%
C 3992 3992 0 0 0.00% 0.00%
D 3992 3992 129 129 3.23% 3.23%

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 34627 317.71 529 519 107.4
A 0 253 13499 120.91 529 519 107.4
A 14 237 5106 42.73 529 519 107.4
B 4 142 101884 1049.43 520 509 96.6
B 0 189 30006 305.35 520 509 96.6
B 10 245 22889 231.68 520 509 96.6
C 3 233 147864 1284.86 502 508 114.7
C 14 238 81401 705.34 502 508 114.7
C 0 207 4407 34.0 502 508 114.7
D 1 52 848117 6820.56 509 496 124.3
D 5 222 113348 908.09 509 496 124.3
D 7 38 48194 383.81 509 496 124.3

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