ASTROSAT CZTI

Data Quality Report

Orbit 29522

Creation date: 2024-06-27T20:05:00.440879
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_073T07_9000004254_29522cztM0_level2.evt modeM0/AS1A10_073T07_9000004254_29522cztM0_level2_quad_clean.evt
Size (bytes)1,159,692,480131,518,080
Size1.1 GB 125.4 MB
Events in quadrant A5,094,570828,893
Events in quadrant B5,239,399845,104
Events in quadrant C5,314,351821,415
Events in quadrant D18,745,213738,135

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02160
B02160
C02160
D02160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0222481
B0224891
C0225061
D0631781

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A108221371.265940%
B108231721.589208%
C108233102.864271%
D10823263724.364779%

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 11273 10824 0 0 0.00% 0.00%
B 11274 10825 14 14 0.12% 0.13%
C 11274 10824 1 1 0.01% 0.01%
D 11274 10825 3077 3077 27.29% 28.42%

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 0 13 30244 107.83 1311 1280 268.6
A 13 254 21735 76.15 1311 1280 268.6
A 3 137 12934 43.39 1311 1280 268.6
B 0 190 38521 146.44 1304 1267 254.4
B 15 33 36357 137.94 1304 1267 254.4
B 12 111 31509 118.88 1304 1267 254.4
C 14 238 236592 789.28 1261 1274 298.1
C 3 233 56822 186.31 1261 1274 298.1
C 14 254 56667 185.79 1261 1274 298.1
D 8 195 12752631 43436.89 1218 1188 293.6
D 7 223 559505 1901.87 1218 1188 293.6
D 13 153 343848 1167.25 1218 1188 293.6

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