ASTROSAT CZTI

Data Quality Report

Orbit 09920

Creation date: 2024-06-27T15:52:15.321337
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/AS1A03_009T01_9000001412_09920cztM0_level2.evt modeM0/AS1A03_009T01_9000001412_09920cztM0_level2_quad_clean.evt
Size (bytes)526,717,44073,105,920
Size502.3 MB 69.7 MB
Events in quadrant A3,587,916448,359
Events in quadrant B3,222,092465,556
Events in quadrant C3,031,893465,271
Events in quadrant D5,672,590386,242

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A017141
B017135
C017236
D017242

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0198304633
B0180214059
C0176723906
D03162410673

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65143956.063862%
B65593465.275194%
C65882794.234973%
D595168611.527474%

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 8659 7257 74 74 0.85% 1.02%
B 8659 7316 11 11 0.13% 0.15%
C 8660 7356 0 0 0.00% 0.00%
D 8659 6719 366 366 4.23% 5.45%

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 15 239 595062 3689.33 774 755 161.1
A 14 111 7862 44.12 774 755 161.1
A 0 226 6961 38.53 774 755 161.1
B 0 214 33468 212.43 789 766 153.9
B 4 239 31115 197.14 789 766 153.9
B 15 85 30613 193.88 789 766 153.9
C 13 61 5904 28.46 775 776 180.2
C 14 67 3817 16.87 775 776 180.2
C 12 4 3239 13.67 775 776 180.2
D 2 16 1367042 8087.35 673 654 169.0
D 1 52 642866 3801.11 673 654 169.0
D 8 195 527928 3120.82 673 654 169.0

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