ASTROSAT CZTI

Data Quality Report

Orbit 06641

Creation date: 2024-06-27T15:09:44.464796
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_111T01_9000000900_06641cztM0_level2.evt modeM0/AS1A02_111T01_9000000900_06641cztM0_level2_quad_clean.evt
Size (bytes)355,029,12078,842,880
Size338.6 MB 75.2 MB
Events in quadrant A2,409,918524,868
Events in quadrant B2,212,821533,165
Events in quadrant C1,949,494521,908
Events in quadrant D3,868,829486,374

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0104380
B097340
C092010
D0147890

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0940
B0940
C0940
D0940

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A45671152.518064%
B4567541.182395%
C4567170.372236%
D45671002.189621%

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 4567 4567 25 25 0.55% 0.55%
B 4567 4567 18 18 0.39% 0.39%
C 4567 4567 0 0 0.00% 0.00%
D 4567 4567 75 75 1.64% 1.64%

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 15 239 333465 3209.17 509 496 103.8
A 13 248 52686 503.01 509 496 103.8
A 8 15 44196 421.18 509 496 103.8
B 0 219 126059 1289.05 517 506 97.4
B 4 48 29582 298.52 517 506 97.4
B 4 81 12302 121.11 517 506 97.4
C 13 61 3961 30.01 499 502 115.3
C 9 247 2265 15.29 499 502 115.3
C 3 202 1224 6.26 499 502 115.3
D 8 195 1542314 12746.1 492 477 121.0
D 2 33 174893 1441.87 492 477 121.0
D 2 152 69223 568.31 492 477 121.0

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