ASTROSAT CZTI

Data Quality Report

Orbit 43957

Creation date: 2024-06-27T22:57:39.893808
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_025T01_9000005920_43957cztM0_level2.fits modeM0/AS1A13_025T01_9000005920_43957cztM0_level2_quad_clean.evt
Size (bytes)1,029,669,120205,816,320
Size982.0 MB 196.3 MB
Events in quadrant A12,953,5511,303,372
Events in quadrant B7,953,8461,408,871
Events in quadrant C6,984,9151,388,954
Events in quadrant D9,195,9531,212,772

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02660
B02660
C02660
D02660

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0479850
B0326220
C0303630
D0364660

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A13273134910.163490%
B132735834.392375%
C132743282.470996%
D132748216.185023%

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 13273 13273 615 615 4.63% 4.63%
B 13273 13273 113 113 0.85% 0.85%
C 13274 13274 161 161 1.21% 1.21%
D 13274 13274 590 590 4.44% 4.44%

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 14 238 2827980 9196.72 1467 1430 307.3
A 15 222 2024430 6582.22 1467 1430 307.3
A 10 83 2003044 6512.63 1467 1430 307.3
B 0 200 1020805 3449.64 1495 1445 295.5
B 5 172 320885 1081.02 1495 1445 295.5
B 0 213 282119 949.84 1495 1445 295.5
C 1 241 328886 945.79 1478 1484 346.2
C 14 254 320783 922.39 1478 1484 346.2
C 15 157 295295 848.76 1478 1484 346.2
D 7 204 752898 2047.59 1464 1417 367.0
D 12 17 544774 1480.51 1464 1417 367.0
D 5 235 480815 1306.24 1464 1417 367.0

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