ASTROSAT CZTI

Data Quality Report

Orbit 38608

Creation date: 2024-06-27T21:54:03.665012
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_052T04_9000005388_38608cztM0_level2.fits modeM0/AS1A12_052T04_9000005388_38608cztM0_level2_quad_clean.evt
Size (bytes)369,449,28094,567,680
Size352.3 MB 90.2 MB
Events in quadrant A2,919,609656,517
Events in quadrant B3,105,301663,956
Events in quadrant C2,749,172638,351
Events in quadrant D4,517,358558,133

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116863
B0123782
C0111112
D0167912

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0330

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4941140.283343%
B4941881.781016%
C4941410.829792%
D49414178.439587%

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 7095 4942 6 6 0.08% 0.12%
B 7095 4942 52 52 0.73% 1.05%
C 7095 4942 30 30 0.42% 0.61%
D 7095 4942 403 403 5.68% 8.15%

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 429123 3505.11 609 597 122.3
A 13 248 78801 639.66 609 597 122.3
A 12 189 35767 287.67 609 597 122.3
B 0 183 345996 3062.33 598 584 112.8
B 5 184 204119 1804.49 598 584 112.8
B 0 229 61513 540.18 598 584 112.8
C 15 214 205845 1536.13 583 589 133.6
C 14 254 195531 1458.94 583 589 133.6
C 0 10 33097 243.29 583 589 133.6
D 2 250 517408 3714.42 572 557 139.1
D 12 235 423038 3036.22 572 557 139.1
D 12 227 357830 2567.59 572 557 139.1

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