ASTROSAT CZTI

Data Quality Report

Orbit 07948

Creation date: 2024-06-27T15:25:53.583409
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_117T01_9000001086_07948cztM0_level2.evt modeM0/AS1G06_117T01_9000001086_07948cztM0_level2_quad_clean.evt
Size (bytes)445,282,56093,401,280
Size424.7 MB 89.1 MB
Events in quadrant A3,521,726582,966
Events in quadrant B3,159,369604,592
Events in quadrant C3,064,312599,575
Events in quadrant D3,279,152569,103

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155733
B0140602
C0140132
D0147632

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6783640.943535%
B6783630.928793%
C6783290.427539%
D6783640.943535%

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 9068 6786 22 22 0.24% 0.32%
B 9068 6786 1 1 0.01% 0.01%
C 9068 6786 0 0 0.00% 0.00%
D 9068 6786 30 30 0.33% 0.44%

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 15 234 456187 2819.71 793 776 161.5
A 0 226 7274 40.23 793 776 161.5
A 12 194 6597 36.04 793 776 161.5
B 12 111 17115 105.75 806 786 154.4
B 11 111 13323 81.19 806 786 154.4
B 10 245 13222 80.54 806 786 154.4
C 1 16 19577 103.5 780 784 181.6
C 13 61 6010 28.78 780 784 181.6
C 8 222 2425 9.04 780 784 181.6
D 1 52 255408 1357.09 770 749 187.7
D 5 81 29318 152.25 770 749 187.7
D 5 233 27607 143.13 770 749 187.7

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