ASTROSAT CZTI

Data Quality Report

Orbit 29676

Creation date: 2024-06-27T20:06:42.969196
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/AS1A10_097T02_9000004272_29676cztM0_level2.evt modeM0/AS1A10_097T02_9000004272_29676cztM0_level2_quad_clean.evt
Size (bytes)175,855,68037,169,280
Size167.7 MB 35.4 MB
Events in quadrant A1,167,373243,863
Events in quadrant B1,234,916250,319
Events in quadrant C1,316,837232,756
Events in quadrant D1,442,776226,924

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050441
B051641
C054401
D058481

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0500
B0500
C0500
D0500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2376592.483165%
B2377763.197308%
C2377893.744215%
D2377421.766933%

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 3571 2377 0 0 0.00% 0.00%
B 3572 2377 0 0 0.00% 0.00%
C 3572 2378 12 12 0.34% 0.50%
D 3572 2378 17 17 0.48% 0.71%

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 4552 68.24 302 295 62.4
A 3 137 3043 44.05 302 295 62.4
A 0 226 2494 35.25 302 295 62.4
B 0 229 28749 473.88 304 296 60.0
B 12 111 7214 115.22 304 296 60.0
B 0 190 6427 102.11 304 296 60.0
C 10 22 100467 1432.9 288 291 69.9
C 14 238 51722 735.66 288 291 69.9
C 3 233 28249 399.91 288 291 69.9
D 8 195 85909 1213.27 287 279 70.6
D 13 104 81717 1153.87 287 279 70.6
D 7 238 65518 924.35 287 279 70.6

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