ASTROSAT CZTI

Data Quality Report

Orbit 44806

Creation date: 2024-06-27T23:06:48.470443
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_012T01_9000006024_44806cztM0_level2.fits modeM0/AS1A13_012T01_9000006024_44806cztM0_level2_quad_clean.evt
Size (bytes)411,560,64052,246,080
Size392.5 MB 49.8 MB
Events in quadrant A6,075,072255,790
Events in quadrant B2,110,736427,435
Events in quadrant C1,703,302411,883
Events in quadrant D5,068,563235,878

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0204801
B085401
C074342
D0174461

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0720
B0720
C0720
D0720

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3549164046.210200%
B35491293.634827%
C3548350.986471%
D3548132337.288613%

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 4749 3549 1414 1414 29.77% 39.84%
B 4749 3549 52 52 1.09% 1.47%
C 4748 3548 3 3 0.06% 0.08%
D 4748 3548 1269 1269 26.73% 35.77%

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 15 223 3718415 50640.59 347 340 73.4
A 10 83 972222 13237.14 347 340 73.4
A 13 248 39926 539.17 347 340 73.4
B 0 168 141852 1646.71 429 416 85.9
B 0 189 84839 982.92 429 416 85.9
B 7 221 52790 609.78 429 416 85.9
C 14 254 17086 166.5 421 424 100.1
C 12 2 12461 120.28 421 424 100.1
C 1 3 11601 111.69 421 424 100.1
D 13 187 2164605 24963.93 339 329 86.7
D 5 235 630391 7267.48 339 329 86.7
D 11 241 374098 4311.25 339 329 86.7

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