ASTROSAT CZTI

Data Quality Report

Orbit 08953

Creation date: 2024-06-27T15:39:22.099601
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/AS1A03_051T01_9000001242_08953cztM0_level2.evt modeM0/AS1A03_051T01_9000001242_08953cztM0_level2_quad_clean.evt
Size (bytes)776,560,320134,861,760
Size740.6 MB 128.6 MB
Events in quadrant A6,100,935840,006
Events in quadrant B5,177,225847,122
Events in quadrant C4,860,655827,417
Events in quadrant D6,627,074801,313

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A025737298
B023188267
C022813216
D027412382

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02282
B02282
C02286
D02282

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11103980.882644%
B11097740.666847%
C11123150.134856%
D110963753.379596%

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 12017 11218 4 4 0.03% 0.04%
B 12017 11224 1 1 0.01% 0.01%
C 12017 11225 0 0 0.00% 0.00%
D 12017 11215 326 326 2.71% 2.91%

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 5 1108410 4174.46 1288 1257 265.2
A 13 251 18677 65.68 1288 1257 265.2
A 0 226 12040 40.65 1288 1257 265.2
B 0 168 39464 153.3 1295 1262 249.2
B 6 51 37297 144.61 1295 1262 249.2
B 12 111 27129 103.8 1295 1262 249.2
C 13 61 9215 27.51 1246 1248 289.6
C 3 202 3136 6.52 1246 1248 289.6
C 1 3 2894 5.68 1246 1248 289.6
D 1 52 832388 2641.25 1225 1192 314.7
D 8 195 371945 1178.13 1225 1192 314.7
D 13 104 323608 1024.53 1225 1192 314.7

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