ASTROSAT CZTI

Data Quality Report

Orbit 25976

Creation date: 2024-06-27T19:23:27.049029
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/AS1A07_068T01_9000003760_25976cztM0_level2.evt modeM0/AS1A07_068T01_9000003760_25976cztM0_level2_quad_clean.evt
Size (bytes)949,691,520153,524,160
Size905.7 MB 146.4 MB
Events in quadrant A5,466,654992,702
Events in quadrant B5,533,065994,466
Events in quadrant C6,734,035937,130
Events in quadrant D10,222,655901,634

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240090
B0241810
C0276890
D0383860

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145
B0145
C0144
D0178

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11800820.694915%
B118031080.915022%
C117782542.156563%
D11777133211.310181%

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 17281 11888 0 0 0.00% 0.00%
B 17282 11910 4 4 0.02% 0.03%
C 17281 11868 52 52 0.30% 0.44%
D 17282 11882 1068 1068 6.18% 8.99%

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 18162 59.11 1415 1383 283.9
A 3 137 13506 42.71 1415 1383 283.9
A 0 226 12196 38.09 1415 1383 283.9
B 12 111 33519 119.86 1393 1354 268.3
B 11 111 30542 108.77 1393 1354 268.3
B 0 230 29489 104.84 1393 1354 268.3
C 3 233 805625 2558.63 1333 1340 314.3
C 7 238 503362 1597.06 1333 1340 314.3
C 14 238 216044 683.03 1333 1340 314.3
D 1 52 4785491 15534.11 1289 1255 308.0
D 7 80 510742 1654.27 1289 1255 308.0
D 2 234 42243 133.09 1289 1255 308.0

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