ASTROSAT CZTI

Data Quality Report

Orbit 20221203_A12_083T07_9000005406_level2

Creation date: 2022-12-06T13:55:42.814858
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_083T07_9000005406cztM0_level2.fits modeM0/AS1A12_083T07_9000005406cztM0_level2_quad_clean.evt
Size (bytes)114,027,84093,545,280
Size108.7 MB 89.2 MB
Events in quadrant A682,716518,810
Events in quadrant B643,982503,552
Events in quadrant C668,872479,037
Events in quadrant D573,438446,335

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0410
B0410
C0410
D0410

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0273120
B0305770
C0267410
D0320730

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02620
B02620
C02620
D02620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12795290.226651%
B127954743.704572%
C12795690.539273%
D127953312.586948%

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 16885 12795 0 0 0.00% 0.00%
B 16885 12794 0 0 0.00% 0.00%
C 16885 12795 0 0 0.00% 0.00%
D 16885 12794 0 0 0.00% 0.00%

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 7 110 568 8.6 178 166 46.7
A 9 19 559 8.41 178 166 46.7
A 0 29 542 8.04 178 166 46.7
B 2 9 565 11.39 169 161 35.5
B 3 80 473 8.79 169 161 35.5
B 2 8 458 8.37 169 161 35.5
C 1 80 561 8.47 176 164 46.9
C 3 202 545 8.13 176 164 46.9
C 1 81 537 7.96 176 164 46.9
D 7 3 421 6.0 163 149 45.3
D 1 3 419 5.95 163 149 45.3
D 10 189 418 5.93 163 149 45.3

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