ASTROSAT CZTI

Data Quality Report

Orbit 36088

Creation date: 2022-08-10T07:57:49.400534
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/AS1T04_069T01_9000005158_36088cztM0_level2.evt modeM0/AS1T04_069T01_9000005158_36088cztM0_level2_quad_clean.evt
Size (bytes)423,702,72046,437,120
Size404.1 MB 44.3 MB
Events in quadrant A2,612,372268,181
Events in quadrant B3,159,507271,015
Events in quadrant C3,107,431258,005
Events in quadrant D3,601,835246,629

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0107293
B0125132
C0120792
D0140132

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0370

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A516770.135475%
B51671102.128895%
C51671372.651442%
D51671813.503000%

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 7290 5168 0 0 0.00% 0.00%
B 7290 5168 74 74 1.02% 1.43%
C 7290 5168 108 108 1.48% 2.09%
D 7290 5168 154 154 2.11% 2.98%

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 10 83 169609 1320.7 631 621 128.0
A 13 254 7485 53.64 631 621 128.0
A 3 137 6128 43.04 631 621 128.0
B 5 172 428648 3578.06 625 608 119.6
B 0 190 116420 968.09 625 608 119.6
B 0 229 57278 473.71 625 608 119.6
C 0 10 331383 2350.84 608 613 140.7
C 15 214 215132 1524.62 608 613 140.7
C 10 49 86186 608.18 608 613 140.7
D 12 6 397704 2673.24 604 588 148.6
D 12 233 208766 1401.38 604 588 148.6
D 13 249 162603 1090.63 604 588 148.6

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