ASTROSAT CZTI

Data Quality Report

Orbit 35633

Creation date: 2022-05-10T13:45:59.449853
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/AS1A11_106T01_9000005102_35633cztM0_level2.evt modeM0/AS1A11_106T01_9000005102_35633cztM0_level2_quad_clean.evt
Size (bytes)1,453,855,680122,814,720
Size1.4 GB 117.1 MB
Events in quadrant A25,332,263486,377
Events in quadrant B6,456,226847,457
Events in quadrant C5,972,610847,369
Events in quadrant D5,562,209809,232

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02140
B02140
C02140
D02140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0822114
B0258173
C0236623
D0231933

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0390
B0390
C0390
D0390

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1047510475100.000000%
B104753963.780430%
C104752372.262530%
D104751030.983294%

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 13579 10477 10006 10006 73.69% 95.50%
B 13579 10477 265 265 1.95% 2.53%
C 13579 10477 171 171 1.26% 1.63%
D 13579 10477 77 77 0.57% 0.73%

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 15 169 22088647 137527.51 797 781 160.6
A 10 83 140914 872.52 797 781 160.6
A 13 254 9408 53.72 797 781 160.6
B 5 172 1621568 6950.32 1201 1167 233.1
B 0 189 68868 290.39 1201 1167 233.1
B 12 111 29703 122.4 1201 1167 233.1
C 0 10 897283 3262.04 1182 1188 274.7
C 15 214 432822 1571.27 1182 1188 274.7
C 9 69 16066 54.16 1182 1188 274.7
D 7 80 274398 944.22 1191 1158 289.4
D 1 52 263415 906.27 1191 1158 289.4
D 13 249 155742 534.19 1191 1158 289.4

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