ASTROSAT CZTI

Data Quality Report

Orbit 14497

Creation date: 2024-06-27T16:56:00.412137
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/AS1G08_034T02_9000002136_14497cztM0_level2.evt modeM0/AS1G08_034T02_9000002136_14497cztM0_level2_quad_clean.evt
Size (bytes)676,739,520109,209,600
Size645.4 MB 104.2 MB
Events in quadrant A4,718,691668,812
Events in quadrant B5,280,145662,972
Events in quadrant C4,785,313656,578
Events in quadrant D5,050,112642,804

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0201832
B0218042
C0201052
D0217962

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01960
B01960
C01960
D01960

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A97531371.404696%
B97532362.419768%
C97531011.035579%
D97532122.173690%

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 10154 9755 3 3 0.03% 0.03%
B 10154 9755 56 56 0.55% 0.57%
C 10154 9755 0 0 0.00% 0.00%
D 10154 9755 99 99 0.97% 1.01%

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 8 15 101347 422.18 1161 1132 237.4
A 12 189 100110 416.97 1161 1132 237.4
A 15 69 21408 85.42 1161 1132 237.4
B 10 245 332683 1492.65 1150 1118 222.1
B 0 219 113814 507.34 1150 1118 222.1
B 0 189 76511 339.41 1150 1118 222.1
C 3 233 344564 1326.4 1116 1120 258.9
C 0 207 62726 237.93 1116 1120 258.9
C 8 128 10567 36.48 1116 1120 258.9
D 10 199 368898 1333.2 1118 1086 275.9
D 12 110 298209 1076.97 1118 1086 275.9
D 15 0 53265 189.13 1118 1086 275.9

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