ASTROSAT CZTI

Data Quality Report

Orbit 36089

Creation date: 2022-08-10T08:10:37.830163
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_36089cztM0_level2.evt modeM0/AS1T04_069T01_9000005158_36089cztM0_level2_quad_clean.evt
Size (bytes)443,059,20050,607,360
Size422.5 MB 48.3 MB
Events in quadrant A2,492,435303,803
Events in quadrant B2,982,140307,876
Events in quadrant C3,062,944301,141
Events in quadrant D4,539,887267,145

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0103583
B0118102
C0120202
D0168462

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0330

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A501950.099621%
B50191422.829249%
C50191042.072126%
D50193717.391911%

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 7113 5020 0 0 0.00% 0.00%
B 7113 5020 102 102 1.43% 2.03%
C 7113 5020 82 82 1.15% 1.63%
D 7113 5020 350 350 4.92% 6.97%

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 166537 1375.44 599 589 120.7
A 13 6 6632 50.09 599 589 120.7
A 13 254 6441 48.5 599 589 120.7
B 5 172 450377 3979.45 591 576 113.0
B 0 190 91368 803.25 591 576 113.0
B 0 229 44522 388.8 591 576 113.0
C 0 207 330048 2454.91 580 584 134.2
C 0 10 213733 1588.22 580 584 134.2
C 15 214 208998 1552.94 580 584 134.2
D 12 227 1381158 9881.12 566 550 139.7
D 12 6 283303 2023.68 566 550 139.7
D 1 52 237434 1695.4 566 550 139.7

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