ASTROSAT CZTI

Data Quality Report

Orbit 30620

Creation date: 2024-06-27T20:17:47.801589
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_071T05_9000004412_30620cztM0_level2.evt modeM0/AS1A10_071T05_9000004412_30620cztM0_level2_quad_clean.evt
Size (bytes)1,581,805,440237,407,040
Size1.5 GB 226.4 MB
Events in quadrant A8,949,0541,533,601
Events in quadrant B14,149,4511,514,311
Events in quadrant C9,728,8621,459,890
Events in quadrant D13,848,8481,424,526

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0385314
B0557044
C0403074
D0539184

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03720
B03720
C03720
D03720

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A182502311.265753%
B182514782.619035%
C182514682.564243%
D182513221.764287%

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 19091 18255 6 6 0.03% 0.03%
B 19092 18256 17 17 0.09% 0.09%
C 19092 18256 49 49 0.26% 0.27%
D 19092 18256 100 100 0.52% 0.55%

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 79049 166.57 2290 2241 461.1
A 13 254 34004 68.88 2290 2241 461.1
A 8 192 33779 68.39 2290 2241 461.1
B 6 159 5049312 11559.19 2253 2193 436.6
B 0 229 81482 181.59 2253 2193 436.6
B 0 190 54989 120.92 2253 2193 436.6
C 9 54 659471 1273.38 2184 2200 516.2
C 14 238 364526 701.96 2184 2200 516.2
C 2 114 43459 79.93 2184 2200 516.2
D 8 195 3754246 7079.92 2212 2156 530.0
D 12 227 740001 1392.26 2212 2156 530.0
D 1 52 570457 1072.34 2212 2156 530.0

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