ASTROSAT CZTI

Data Quality Report

Orbit 40692

Creation date: 2024-06-27T22:19:14.091562
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_029T02_9000005558_40692cztM0_level2.fits modeM0/AS1A12_029T02_9000005558_40692cztM0_level2_quad_clean.evt
Size (bytes)377,274,24081,227,520
Size359.8 MB 77.5 MB
Events in quadrant A2,716,088590,829
Events in quadrant B2,718,627616,649
Events in quadrant C5,804,479499,289
Events in quadrant D2,341,324407,201

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110233
B0112962
C0206602
D0107392

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0330

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4929130.263745%
B4929611.237574%
C492987717.792656%
D4929119424.223981%

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 7022 4930 5 5 0.07% 0.10%
B 7022 4930 34 34 0.48% 0.69%
C 7022 4929 880 880 12.53% 17.85%
D 7022 4929 35 35 0.50% 0.71%

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 470530 4107.83 559 549 114.4
A 12 189 50209 434.05 559 549 114.4
A 2 79 19425 164.98 559 549 114.4
B 0 229 292816 2735.59 560 545 106.8
B 5 255 104563 973.59 560 545 106.8
B 0 190 59324 550.16 560 545 106.8
C 9 187 2893283 24339.74 512 516 118.8
C 14 254 568353 4777.78 512 516 118.8
C 15 214 202515 1699.62 512 516 118.8
D 12 191 261084 2451.96 430 418 106.3
D 2 249 135594 1271.53 430 418 106.3
D 2 250 119763 1122.62 430 418 106.3

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