ASTROSAT CZTI

Data Quality Report

Orbit 07523

Creation date: 2024-06-27T15:20:46.846317
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/AS1A02_134T01_9000001036_07523cztM0_level2.evt modeM0/AS1A02_134T01_9000001036_07523cztM0_level2_quad_clean.evt
Size (bytes)1,941,307,200385,920,000
Size1.8 GB 368.0 MB
Events in quadrant A13,378,1952,456,111
Events in quadrant B13,535,3362,488,633
Events in quadrant C13,140,2442,418,983
Events in quadrant D16,741,4542,294,048

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06080
B06080
C06080
D06080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0600115
B0602965
C0599975
D0707265

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A29531960.325082%
B295311210.409739%
C295311090.369104%
D295314931.669432%

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 32751 29536 19 19 0.06% 0.06%
B 32751 29536 7 7 0.02% 0.02%
C 32751 29536 10 10 0.03% 0.03%
D 32751 29536 338 338 1.03% 1.14%

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 13 248 169320 241.82 3394 3318 686.5
A 13 14 80035 111.76 3394 3318 686.5
A 8 15 69417 96.29 3394 3318 686.5
B 0 214 179043 273.84 3412 3326 641.7
B 12 111 64147 94.78 3412 3326 641.7
B 0 219 52757 77.03 3412 3326 641.7
C 8 229 126863 163.15 3300 3307 757.3
C 9 68 80868 102.42 3300 3307 757.3
C 10 22 26666 30.84 3300 3307 757.3
D 5 233 1572229 1979.03 3279 3182 792.8
D 14 34 1287799 1620.28 3279 3182 792.8
D 5 184 389437 487.18 3279 3182 792.8

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