ASTROSAT CZTI

Data Quality Report

Orbit 39270

Creation date: 2024-06-27T22:02:31.380092
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_037T01_9000005456_39270cztM0_level2.fits modeM0/AS1A12_037T01_9000005456_39270cztM0_level2_quad_clean.evt
Size (bytes)1,038,542,400170,930,880
Size990.4 MB 163.0 MB
Events in quadrant A10,046,7671,078,754
Events in quadrant B5,865,3111,264,949
Events in quadrant C5,310,3121,214,771
Events in quadrant D16,374,129858,759

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0369713
B0245042
C0225972
D0562542

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02240
B02240
C02240
D02240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0510
B0510
C0510
D0510

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10955163714.942948%
B109552642.409859%
C10955130.118667%
D10955292526.700137%

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 16001 10958 1387 1387 8.67% 12.66%
B 16001 10958 139 139 0.87% 1.27%
C 16001 10958 0 0 0.00% 0.00%
D 16001 10958 2579 2579 16.12% 23.54%

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 15 222 4879501 20870.18 1152 1127 233.7
A 10 83 700983 2994.06 1152 1127 233.7
A 13 254 14018 55.15 1152 1127 233.7
B 5 255 404776 1727.05 1222 1188 233.7
B 5 172 315980 1347.07 1222 1188 233.7
B 0 190 178636 759.34 1222 1188 233.7
C 15 214 492757 1744.71 1210 1217 281.7
C 3 233 80527 281.51 1210 1217 281.7
C 0 10 10379 32.52 1210 1217 281.7
D 12 235 11094336 41629.41 1095 1064 266.5
D 12 227 426788 1597.6 1095 1064 266.5
D 1 47 277312 1036.67 1095 1064 266.5

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