ASTROSAT CZTI

Data Quality Report

Orbit 39284

Creation date: 2024-06-27T22:02:41.041280
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_025T12_9000005458_39284cztM0_level2.fits modeM0/AS1A12_025T12_9000005458_39284cztM0_level2_quad_clean.evt
Size (bytes)964,552,320224,323,200
Size919.9 MB 213.9 MB
Events in quadrant A7,479,6901,516,362
Events in quadrant B6,809,1291,557,193
Events in quadrant C6,522,5541,487,550
Events in quadrant D13,827,3241,279,540

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02820
B02820
C02820
D02820

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0311244
B0297293
C0281173
D0506573

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0480
B0480
C0480
D0480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A13775670.486388%
B13775880.638838%
C13775140.101633%
D1377513179.560799%

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 18583 13778 48 48 0.26% 0.35%
B 18583 13778 37 37 0.20% 0.27%
C 18583 13778 6 6 0.03% 0.04%
D 18583 13778 1182 1182 6.36% 8.58%

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 892774 2870.35 1530 1498 310.5
A 15 222 647155 2079.34 1530 1498 310.5
A 3 1 25776 78.19 1530 1498 310.5
B 5 184 602372 2054.63 1518 1473 292.5
B 5 172 213694 725.64 1518 1473 292.5
B 12 111 37756 124.06 1518 1473 292.5
C 15 214 570608 1631.64 1496 1504 348.8
C 9 187 70919 199.02 1496 1504 348.8
C 3 233 27753 75.26 1496 1504 348.8
D 12 235 6504880 18716.06 1428 1387 347.5
D 1 47 438572 1258.15 1428 1387 347.5
D 5 222 437350 1254.63 1428 1387 347.5

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