ASTROSAT CZTI

Data Quality Report

Orbit 20272

Creation date: 2024-06-27T18:13:18.930834
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/AS1A05_175T01_9000003004_20272cztM0_level2.evt modeM0/AS1A05_175T01_9000003004_20272cztM0_level2_quad_clean.evt
Size (bytes)750,542,400124,179,840
Size715.8 MB 118.4 MB
Events in quadrant A5,795,415770,614
Events in quadrant B5,293,788772,826
Events in quadrant C4,814,210756,608
Events in quadrant D6,123,253740,823

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0242161
B0227911
C0211492
D0253841

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02080
B02100
C02100
D02100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A103921691.626251%
B103931601.539498%
C10392770.740955%
D103922512.415319%

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 10967 10393 87 87 0.79% 0.84%
B 10968 10394 61 61 0.56% 0.59%
C 10967 10393 0 0 0.00% 0.00%
D 10967 10393 200 200 1.82% 1.92%

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 14 238 1005832 4133.18 1203 1176 243.1
A 4 2 101967 414.66 1203 1176 243.1
A 8 205 34171 135.74 1203 1176 243.1
B 7 220 389972 1704.52 1199 1172 228.1
B 0 244 74803 322.8 1199 1172 228.1
B 0 197 31225 131.75 1199 1172 228.1
C 14 238 182588 664.68 1164 1170 272.9
C 9 221 32793 115.86 1164 1170 272.9
C 3 233 17643 60.35 1164 1170 272.9
D 11 176 815181 2893.66 1171 1140 281.3
D 1 52 428135 1517.83 1171 1140 281.3
D 9 1 175499 619.79 1171 1140 281.3

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