ASTROSAT CZTI

Data Quality Report

Orbit 22756

Creation date: 2024-06-27T18:45:30.441777
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/AS1C05_013T02_9000003364_22756cztM0_level2.evt modeM0/AS1C05_013T02_9000003364_22756cztM0_level2_quad_clean.evt
Size (bytes)234,126,72039,300,480
Size223.3 MB 37.5 MB
Events in quadrant A1,113,273288,800
Events in quadrant B1,136,654291,815
Events in quadrant C1,104,922275,405
Events in quadrant D3,586,733176,970

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A045621
B046281
C045571
D0120991

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0460
B0460
C0460
D0460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2156552.551020%
B2156642.968460%
C2156562.597403%
D2156121556.354360%

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 3266 2157 0 0 0.00% 0.00%
B 3266 2157 1 1 0.03% 0.05%
C 3266 2157 0 0 0.00% 0.00%
D 3266 2157 1122 1122 34.35% 52.02%

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 13 254 3634 57.55 288 281 58.3
A 0 226 2617 40.09 288 281 58.3
A 3 137 2268 34.1 288 281 58.3
B 0 228 10803 194.27 283 276 54.2
B 0 230 6464 114.2 283 276 54.2
B 12 111 6122 107.89 283 276 54.2
C 14 238 43227 671.36 271 272 64.0
C 10 22 2242 30.79 271 272 64.0
C 13 61 1855 24.74 271 272 64.0
D 7 238 2596458 52181.33 202 196 49.8
D 1 52 120098 2409.87 202 196 49.8
D 2 152 51493 1031.0 202 196 49.8

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