ASTROSAT CZTI

Data Quality Report

Orbit 05884

Creation date: 2024-06-27T15:00:25.902187
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/AS1G06_023T01_9000000762_05884cztM0_level2.evt modeM0/AS1G06_023T01_9000000762_05884cztM0_level2_quad_clean.evt
Size (bytes)1,350,489,600150,667,200
Size1.3 GB 143.7 MB
Events in quadrant A7,456,7901,019,655
Events in quadrant B5,944,2191,029,336
Events in quadrant C5,425,802997,594
Events in quadrant D21,227,283647,191

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02540
B02540
C02540
D02540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0313883
B0264212
C0255352
D0717112

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A125371651.316104%
B125371140.909308%
C12537920.733828%
D12537610248.671931%

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 13662 12539 3 3 0.02% 0.02%
B 13662 12539 4 4 0.03% 0.03%
C 13662 12539 2 2 0.01% 0.02%
D 13662 12539 5396 5396 39.50% 43.03%

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 15 236 2004288 7015.3 1405 1374 285.5
A 7 16 29567 98.75 1405 1374 285.5
A 12 194 13790 43.49 1405 1374 285.5
B 15 204 151523 551.74 1422 1387 272.1
B 0 219 84606 305.82 1422 1387 272.1
B 0 214 66162 238.04 1422 1387 272.1
C 1 16 42977 130.43 1373 1377 318.9
C 8 128 12092 33.6 1373 1377 318.9
C 13 61 11078 30.42 1373 1377 318.9
D 2 152 15401781 59394.59 1061 1027 259.3
D 1 20 1380965 5321.87 1061 1027 259.3
D 2 136 148423 568.45 1061 1027 259.3

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