ASTROSAT CZTI

Data Quality Report

Orbit 33634

Creation date: 2024-06-27T20:50:54.279581
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/AS1T04_076T01_9000004810_33634cztM0_level2.evt modeM0/AS1T04_076T01_9000004810_33634cztM0_level2_quad_clean.evt
Size (bytes)943,856,640116,579,520
Size900.1 MB 111.2 MB
Events in quadrant A5,346,361712,571
Events in quadrant B7,390,405699,921
Events in quadrant C7,087,693707,288
Events in quadrant D8,042,839674,294

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02160
B02160
C02160
D02160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0370
B0370
C0370
D0380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0224164
B0286373
C0279893
D0316573

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10634910.855746%
B106347527.071657%
C106341841.730299%
D106343062.877563%

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 13470 10636 80 80 0.59% 0.75%
B 13470 10636 583 583 4.33% 5.48%
C 13470 10636 156 156 1.16% 1.47%
D 13470 10636 269 269 2.00% 2.53%

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 15 237 259894 1026.82 1258 1234 251.9
A 15 169 139554 549.1 1258 1234 251.9
A 9 143 64294 250.33 1258 1234 251.9
B 5 172 1615395 6806.88 1227 1195 237.1
B 5 200 231082 969.41 1227 1195 237.1
B 0 182 230503 966.96 1227 1195 237.1
C 3 233 1232609 4333.79 1223 1232 284.1
C 15 214 491727 1726.28 1223 1232 284.1
C 0 10 349431 1225.47 1223 1232 284.1
D 8 195 1245342 3907.13 1214 1183 318.4
D 7 223 486473 1524.0 1214 1183 318.4
D 13 249 329801 1031.99 1214 1183 318.4

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