ASTROSAT CZTI

Data Quality Report

Orbit 20220923_T05_057T01_9000005346_level2

Creation date: 2022-09-30T21:27:13.311928
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/AS1T05_057T01_9000005346cztM0_level2_bc.evt modeM0/AS1T05_057T01_9000005346cztM0_level2_quad_clean.evt
Size (bytes)2,896,663,680841,665,600
Size2.7 GB 802.7 MB
Events in quadrant A21,986,6795,320,857
Events in quadrant B17,645,6145,406,693
Events in quadrant C17,495,0775,417,047
Events in quadrant D26,284,6264,998,162

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01548950
B01452920
C01367840
D01740620

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012980
B012980
C012980
D012980

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02570
B02570
C02570
D02570

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6341822213.502160%
B634189311.468037%
C634184250.670157%
D6341827654.359961%

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 87769 63428 870 870 0.99% 1.37%
B 87768 63414 85 85 0.10% 0.13%
C 87768 63417 51 51 0.06% 0.08%
D 87768 63415 572 572 0.65% 0.90%

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 15 222 5100386 7029.45 3259 3207 725.1
A 10 83 3244395 4469.88 3259 3207 725.1
A 9 143 487694 668.15 3259 3207 725.1
B 0 229 953712 1448.71 3297 3228 656.1
B 4 81 862707 1310.0 3297 3228 656.1
B 5 172 735066 1115.46 3297 3228 656.1
C 15 214 2749006 3763.67 3220 3202 729.6
C 0 207 844188 1152.74 3220 3202 729.6
C 0 10 679977 927.65 3220 3202 729.6
D 7 223 3584446 4787.36 3199 3113 748.1
D 12 235 1739567 2321.21 3199 3113 748.1
D 13 249 1737258 2318.12 3199 3113 748.1

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