ASTROSAT CZTI

Data Quality Report

Orbit 20220504_A09_029T03_9000005108_level2

Creation date: 2022-09-12T17:26:18.093067
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/AS1A09_029T03_9000005108cztM0_level2_bc.evt modeM0/AS1A09_029T03_9000005108cztM0_level2_quad_clean.evt
Size (bytes)1,049,512,320312,143,040
Size1000.9 MB 297.7 MB
Events in quadrant A5,782,3272,026,159
Events in quadrant B10,489,0041,995,481
Events in quadrant C6,940,6411,937,029
Events in quadrant D6,967,5941,878,110

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04840
B04840
C04840
D04820

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01110
B01110
C01110
D01110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0495030
B0699470
C0530380
D0558260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A23496330.140449%
B2349619388.248212%
C234974491.910882%
D234965622.391896%

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 34674 23503 4 4 0.01% 0.02%
B 34674 23494 131 131 0.38% 0.56%
C 34674 23495 44 44 0.13% 0.19%
D 34674 23498 64 64 0.18% 0.27%

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 10 83 520401 1892.41 1248 1228 274.3
A 15 169 287425 1043.2 1248 1228 274.3
A 7 16 65217 233.24 1248 1228 274.3
B 5 172 3149208 12804.31 1206 1178 245.9
B 5 31 1371858 5575.11 1206 1178 245.9
B 5 255 733476 2978.55 1206 1178 245.9
C 15 214 923142 3414.03 1180 1170 270.1
C 0 10 875485 3237.56 1180 1170 270.1
C 9 187 236754 872.36 1180 1170 270.1
D 13 249 443485 1568.05 1201 1167 282.1
D 10 118 368324 1301.6 1201 1167 282.1
D 2 153 317703 1122.14 1201 1167 282.1

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