ASTROSAT CZTI

Data Quality Report

Orbit 20220906_A10_113T02_9000005332_level2

Creation date: 2022-09-12T14:39:52.766367
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_113T02_9000005332cztM0_level2_bc.evt modeM0/AS1A10_113T02_9000005332cztM0_level2_quad_clean.evt
Size (bytes)1,189,851,840303,301,440
Size1.1 GB 289.3 MB
Events in quadrant A9,193,1111,968,072
Events in quadrant B6,161,1831,971,962
Events in quadrant C5,966,6831,965,850
Events in quadrant D13,132,6791,684,180

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04740
B04740
C04740
D04740

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0890
B0890
C0890
D0890

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0613760
B0516460
C0486050
D0773500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A231822170.936071%
B231823291.419205%
C23182970.418428%
D23182300912.979898%

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 32148 23187 10 10 0.03% 0.04%
B 32148 23181 14 14 0.04% 0.06%
C 32148 23182 16 16 0.05% 0.07%
D 32147 23171 1220 1220 3.80% 5.27%

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 15 222 3267244 12674.21 1157 1138 257.7
A 10 83 1052510 4079.88 1157 1138 257.7
A 12 189 127259 489.42 1157 1138 257.7
B 5 172 526597 2269.38 1164 1140 231.5
B 5 255 410346 1767.31 1164 1140 231.5
B 0 219 109341 467.31 1164 1140 231.5
C 15 214 942778 3528.28 1145 1134 266.9
C 14 254 311426 1162.65 1145 1134 266.9
C 0 10 151933 565.03 1145 1134 266.9
D 12 227 5369521 20919.45 1074 1041 256.6
D 2 249 1044549 4066.26 1074 1041 256.6
D 12 233 695557 2706.33 1074 1041 256.6

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