ASTROSAT CZTI

Data Quality Report

Orbit 44667

Creation date: 2024-06-27T23:05:05.780331
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/AS1A13_072T01_9000006008_44667cztM0_level2.fits modeM0/AS1A13_072T01_9000006008_44667cztM0_level2_quad_clean.evt
Size (bytes)1,582,205,760371,177,280
Size1.5 GB 354.0 MB
Events in quadrant A16,525,1522,486,281
Events in quadrant B11,075,4052,594,678
Events in quadrant C10,508,2272,456,822
Events in quadrant D18,659,4212,098,165

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0694304
B0497114
C0487804
D0720864

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04720
B04720
C04720
D04720

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A232804601.975945%
B232813241.391693%
C232811090.468193%
D2328119708.461836%

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 25380 23285 35 35 0.14% 0.15%
B 25381 23286 38 38 0.15% 0.16%
C 25381 23286 43 43 0.17% 0.18%
D 25381 23286 1498 1498 5.90% 6.43%

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 6274568 11933.62 2566 2505 525.6
A 13 248 213042 400.58 2566 2505 525.6
A 10 248 48324 87.18 2566 2505 525.6
B 0 189 182729 363.61 2559 2475 495.7
B 0 183 150994 299.59 2559 2475 495.7
B 0 168 121204 239.5 2559 2475 495.7
C 14 254 235733 402.12 2496 2506 580.0
C 12 2 216443 368.86 2496 2506 580.0
C 3 233 167284 284.1 2496 2506 580.0
D 1 52 3263703 5434.77 2408 2332 600.1
D 2 249 2246720 3740.06 2408 2332 600.1
D 13 249 1795206 2987.66 2408 2332 600.1

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