ASTROSAT CZTI

Data Quality Report

Orbit 39362

Creation date: 2024-06-27T22:03:40.720454
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_018T01_9000005470_39362cztM0_level2.fits modeM0/AS1A12_018T01_9000005470_39362cztM0_level2_quad_clean.evt
Size (bytes)874,656,000148,610,880
Size834.1 MB 141.7 MB
Events in quadrant A5,111,4981,095,657
Events in quadrant B4,784,1321,125,348
Events in quadrant C4,692,0631,045,578
Events in quadrant D17,063,908583,572

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0410
B0410
C0410
D0410

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01920
B01920
C01920
D01920

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0208194
B0207643
C0200043
D0572016

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9364450.480564%
B93641151.228108%
C9364170.181546%
D9363419044.750614%

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 13519 9366 27 27 0.20% 0.29%
B 13519 9366 79 79 0.58% 0.84%
C 13519 9366 11 11 0.08% 0.12%
D 13519 9366 3843 3843 28.43% 41.03%

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 683639 3293.35 1042 1023 207.3
A 15 223 171540 822.68 1042 1023 207.3
A 2 79 112442 537.55 1042 1023 207.3
B 4 170 489507 2484.19 1029 1001 196.6
B 5 255 251830 1275.53 1029 1001 196.6
B 12 111 24162 117.78 1029 1001 196.6
C 15 214 393564 1710.17 996 1001 229.5
C 9 187 361188 1569.13 996 1001 229.5
C 14 254 27090 113.65 996 1001 229.5
D 12 235 13115948 67268.17 807 782 195.0
D 13 249 206582 1055.56 807 782 195.0
D 12 227 193772 989.85 807 782 195.0

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