ASTROSAT CZTI

Data Quality Report

Orbit 00993

Creation date: 2024-06-27T14:05:50.251349
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/AS1P01_998T01_9000000188_00993cztM0_level2.evt modeM0/AS1P01_998T01_9000000188_00993cztM0_level2_quad_clean.evt
Size (bytes)2,012,906,880111,415,680
Size1.9 GB 106.3 MB
Events in quadrant A13,819,282657,343
Events in quadrant B14,745,523661,048
Events in quadrant C13,737,659647,772
Events in quadrant D17,880,897591,341

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0494630
B0520940
C0492070
D0616470

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02420
B02420
C02420
D02420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11788220.186630%
B11788280.237530%
C11788100.084832%
D117889277.863929%

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 13338 11790 252 252 1.89% 2.14%
B 13338 11790 405 405 3.04% 3.44%
C 13338 11790 207 207 1.55% 1.76%
D 13338 11790 2392 2392 17.93% 20.29%

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 15 233 62254 68.19 3578 3607 860.1
A 0 253 14188 12.3 3578 3607 860.1
A 11 79 13026 10.95 3578 3607 860.1
B 7 221 157981 174.65 3744 3762 883.0
B 15 220 132168 145.42 3744 3762 883.0
B 5 249 110813 121.24 3744 3762 883.0
C 15 241 543505 582.68 3345 3456 926.8
C 3 111 49159 49.31 3345 3456 926.8
C 3 79 46132 46.04 3345 3456 926.8
D 12 188 5250949 5359.85 3175 3289 979.1
D 1 4 250808 252.81 3175 3289 979.1
D 13 85 199242 200.14 3175 3289 979.1

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