ASTROSAT CZTI

Data Quality Report

Orbit 29369

Creation date: 2024-06-27T20:03:18.934989
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_279T01_9000004218_29369cztM0_level2.evt modeM0/AS1T03_279T01_9000004218_29369cztM0_level2_quad_clean.evt
Size (bytes)990,201,600151,280,640
Size944.3 MB 144.3 MB
Events in quadrant A5,278,2911,000,658
Events in quadrant B5,380,4331,017,719
Events in quadrant C8,063,041971,699
Events in quadrant D10,594,623900,801

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02020
B02020
C02020
D02020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0215772
B0219262
C0305092
D0384752

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9973740.742003%
B9974900.902346%
C99749839.855625%
D9974125612.592741%

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 12523 9975 2 2 0.02% 0.02%
B 12524 9976 7 7 0.06% 0.07%
C 12524 9976 516 516 4.12% 5.17%
D 12524 9976 958 958 7.65% 9.60%

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 0 13 80308 298.99 1348 1323 264.2
A 13 254 19534 68.94 1348 1323 264.2
A 3 137 11660 39.13 1348 1323 264.2
B 10 245 28140 109.84 1329 1300 244.3
B 12 111 28003 109.28 1329 1300 244.3
B 0 182 27088 105.54 1329 1300 244.3
C 10 9 1963622 6569.33 1281 1294 298.7
C 3 233 864888 2891.07 1281 1294 298.7
C 14 238 214479 713.68 1281 1294 298.7
D 1 52 3488152 11608.35 1267 1239 300.4
D 7 80 1029834 3424.32 1267 1239 300.4
D 8 195 537824 1786.36 1267 1239 300.4

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