ASTROSAT CZTI

Data Quality Report

Orbit 49678

Creation date: 2024-12-10T13:48:56.543205
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_233T01_9000006438_49678cztM0_level2.fits modeM0/AS1T05_233T01_9000006438_49678cztM0_level2_quad_clean.evt
Size (bytes)1,127,030,40052,087,680
Size1.0 GB 49.7 MB
Events in quadrant A14,477,748328,912
Events in quadrant B5,150,944619,963
Events in quadrant C6,155,6806,459
Events in quadrant D15,468,538193,959

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0470650
B0193860
C0224940
D0501080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6007553792.175795%
B600863010.486019%
C60086008100.000000%
D6008594899.001332%

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 7077 6007 5144 5144 72.69% 85.63%
B 7078 6009 473 473 6.68% 7.87%
C 7077 6007 445 445 6.29% 7.41%
D 7078 6008 5455 5455 77.07% 90.80%

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 5431357 47861.12 388 376 113.5
A 7 64 2119815 18677.79 388 376 113.5
A 12 50 1875965 16528.83 388 376 113.5
B 10 16 1375843 10168.02 636 615 135.3
B 7 0 367642 2713.69 636 615 135.3
B 4 206 262752 1938.16 636 615 135.3
C 15 190 1638110 91689.94 25 23 17.9
C 15 181 1411442 79002.47 25 23 17.9
C 15 180 782944 43823.05 25 23 17.9
D 15 40 4040261 45110.91 250 239 89.6
D 15 184 1801518 20113.09 250 239 89.6
D 12 191 1253405 13992.86 250 239 89.6

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