ASTROSAT CZTI

Data Quality Report

Orbit 23197

Creation date: 2024-06-27T18:51:10.386891
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/AS1T03_175T01_9000003428_23197cztM0_level2.evt modeM0/AS1T03_175T01_9000003428_23197cztM0_level2_quad_clean.evt
Size (bytes)2,032,755,840364,878,720
Size1.9 GB 348.0 MB
Events in quadrant A13,664,9922,276,983
Events in quadrant B13,864,5102,328,984
Events in quadrant C14,852,9802,243,585
Events in quadrant D17,204,1042,191,347

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05920
B05920
C05920
D05920

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0599625
B0602605
C0626315
D0714586

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A292552880.984447%
B292564181.428767%
C292565992.047443%
D2925510793.688258%

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 31710 29259 0 0 0.00% 0.00%
B 31711 29261 3 3 0.01% 0.01%
C 31711 29260 24 24 0.08% 0.08%
D 31710 29260 649 649 2.05% 2.22%

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 13 254 42916 55.54 3538 3455 710.5
A 3 137 32280 40.57 3538 3455 710.5
A 0 226 30180 37.61 3538 3455 710.5
B 12 111 84895 120.68 3517 3423 675.1
B 11 111 76182 107.77 3517 3423 675.1
B 14 111 67984 95.63 3517 3423 675.1
C 7 247 557976 701.55 3391 3415 790.5
C 14 238 532952 669.89 3391 3415 790.5
C 0 10 459337 576.77 3391 3415 790.5
D 1 52 2683289 3220.6 3406 3309 832.1
D 13 153 825777 988.38 3406 3309 832.1
D 7 238 275287 326.84 3406 3309 832.1

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