ASTROSAT CZTI

Data Quality Report

Orbit 23081

Creation date: 2024-06-27T18:49:30.575985
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/AS1A07_049T01_9000003408_23081cztM0_level2.evt modeM0/AS1A07_049T01_9000003408_23081cztM0_level2_quad_clean.evt
Size (bytes)817,375,680144,253,440
Size779.5 MB 137.6 MB
Events in quadrant A5,351,606914,383
Events in quadrant B6,061,025916,040
Events in quadrant C5,866,517876,377
Events in quadrant D6,691,709861,298

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0236342
B0254532
C0247692
D0275742

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02380
B02380
C02380
D02380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11561870.752530%
B115622041.764401%
C115622311.997924%
D115621721.487632%

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 13036 11562 0 0 0.00% 0.00%
B 13037 11563 81 81 0.62% 0.70%
C 13037 11563 41 41 0.31% 0.35%
D 13037 11564 107 107 0.82% 0.93%

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 6 16 58028 204.99 1373 1341 276.5
A 13 254 17021 56.7 1373 1341 276.5
A 3 137 12343 39.78 1373 1341 276.5
B 14 207 556365 2131.36 1357 1322 260.4
B 3 64 46150 172.14 1357 1322 260.4
B 0 183 45297 168.86 1357 1322 260.4
C 0 10 416120 1351.26 1311 1319 307.0
C 14 238 206721 669.12 1311 1319 307.0
C 10 187 62854 200.46 1311 1319 307.0
D 1 52 1075862 3287.26 1338 1298 326.9
D 12 227 283777 864.15 1338 1298 326.9
D 7 238 149352 452.92 1338 1298 326.9

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