ASTROSAT CZTI

Data Quality Report

Orbit 40691

Creation date: 2024-06-27T22:19:13.116931
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/AS1A12_029T02_9000005558_40691cztM0_level2.fits modeM0/AS1A12_029T02_9000005558_40691cztM0_level2_quad_clean.evt
Size (bytes)390,755,52093,784,320
Size372.7 MB 89.4 MB
Events in quadrant A2,941,355649,990
Events in quadrant B2,955,171679,955
Events in quadrant C5,070,869615,857
Events in quadrant D3,070,619510,665

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120293
B0123332
C0187612
D0129502

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0380

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5475130.237443%
B5475430.785388%
C54753676.703196%
D547581614.904110%

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 9298 5477 4 4 0.04% 0.07%
B 9298 5477 24 24 0.26% 0.44%
C 9298 5477 370 370 3.98% 6.76%
D 9298 5477 53 53 0.57% 0.97%

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 497273 3885.78 621 608 127.8
A 2 79 22332 169.96 621 608 127.8
A 12 189 10702 78.97 621 608 127.8
B 0 229 213805 1788.88 624 608 119.2
B 5 255 100633 839.28 624 608 119.2
B 0 190 93067 775.8 624 608 119.2
C 9 187 2450283 17552.65 597 600 139.6
C 15 214 235449 1682.76 597 600 139.6
C 14 254 34564 243.36 597 600 139.6
D 2 250 261593 1910.2 549 534 136.7
D 12 191 199905 1458.82 549 534 136.7
D 2 249 165805 1209.31 549 534 136.7

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