ASTROSAT CZTI

Data Quality Report

Orbit 16436

Creation date: 2024-06-27T17:22:39.790497
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/AS1A05_069T04_9000002428_16436cztM0_level2.evt modeM0/AS1A05_069T04_9000002428_16436cztM0_level2_quad_clean.evt
Size (bytes)824,719,680159,482,880
Size786.5 MB 152.1 MB
Events in quadrant A5,521,2981,018,064
Events in quadrant B6,208,0621,032,385
Events in quadrant C6,284,391988,146
Events in quadrant D6,148,404960,145

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0245713
B0260032
C0263442
D0264202

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02460
B02460
C02460
D02460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A120201030.856905%
B120201411.173045%
C120203292.737105%
D120201221.014975%

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 13221 12022 0 0 0.00% 0.00%
B 13221 12022 21 21 0.16% 0.17%
C 13221 12022 102 102 0.77% 0.85%
D 13221 12021 37 37 0.28% 0.31%

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 15 174 55060 185.98 1421 1390 288.6
A 0 226 12314 37.85 1421 1390 288.6
A 12 194 10654 32.1 1421 1390 288.6
B 15 35 159994 579.57 1419 1378 273.7
B 0 198 144588 523.28 1419 1378 273.7
B 0 189 99755 359.46 1419 1378 273.7
C 4 254 568826 1779.6 1354 1361 318.9
C 14 238 208005 648.05 1354 1361 318.9
C 3 233 161132 501.05 1354 1361 318.9
D 5 222 355492 1044.84 1383 1340 339.0
D 1 52 192858 565.03 1383 1340 339.0
D 12 218 168379 492.81 1383 1340 339.0

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