ASTROSAT CZTI

Data Quality Report

Orbit 21926

Creation date: 2024-06-27T18:34:02.775496
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_100T03_9000003242_21926cztM0_level2.evt modeM0/AS1A07_100T03_9000003242_21926cztM0_level2_quad_clean.evt
Size (bytes)1,022,613,120195,223,680
Size975.2 MB 186.2 MB
Events in quadrant A5,228,3351,362,614
Events in quadrant B11,916,5551,222,171
Events in quadrant C5,219,3811,315,050
Events in quadrant D7,866,4811,254,607

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0226492
B0427812
C0225452
D0306394

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02220
B02220
C02220
D02220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10947880.803873%
B10947260123.759934%
C109471271.160135%
D109465795.289604%

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 13097 10947 0 0 0.00% 0.00%
B 13096 10946 2347 2347 17.92% 21.44%
C 13097 10948 0 0 0.00% 0.00%
D 13096 10946 492 492 3.76% 4.49%

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 3 1 30981 109.85 1343 1317 270.0
A 13 254 20133 69.68 1343 1317 270.0
A 0 226 11734 38.58 1343 1317 270.0
B 0 85 6634092 29327.72 1215 1187 226.2
B 3 64 265309 1167.83 1215 1187 226.2
B 0 197 78696 342.71 1215 1187 226.2
C 14 238 206611 692.73 1281 1285 296.4
C 10 22 19995 63.12 1281 1285 296.4
C 13 61 8824 25.43 1281 1285 296.4
D 1 52 1067010 3483.11 1277 1240 306.0
D 12 235 825041 2692.32 1277 1240 306.0
D 7 38 512276 1670.15 1277 1240 306.0

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