ASTROSAT CZTI

Data Quality Report

Orbit 13921

Creation date: 2024-06-27T16:47:55.679174
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/AS1A04_219T01_9000002054_13921cztM0_level2.evt modeM0/AS1A04_219T01_9000002054_13921cztM0_level2_quad_clean.evt
Size (bytes)471,124,800101,462,400
Size449.3 MB 96.8 MB
Events in quadrant A2,984,651669,786
Events in quadrant B3,081,618674,875
Events in quadrant C3,068,198665,894
Events in quadrant D4,716,945633,823

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129102
B0130971
C0130891
D0183351

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6140661.074919%
B6140741.205212%
C6140560.912052%
D61402283.713355%

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 7221 6141 0 0 0.00% 0.00%
B 7221 6141 5 5 0.07% 0.08%
C 7221 6141 1 1 0.01% 0.02%
D 7221 6141 154 154 2.13% 2.51%

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 8 15 21624 134.63 765 749 155.1
A 1 162 9561 56.83 765 749 155.1
A 0 226 6786 38.93 765 749 155.1
B 10 244 38428 259.44 757 739 145.3
B 4 173 23864 159.18 757 739 145.3
B 4 80 17872 117.94 757 739 145.3
C 3 233 139208 794.91 749 753 174.2
C 14 234 6294 31.81 749 753 174.2
C 13 61 5268 25.92 749 753 174.2
D 13 122 1098696 6291.53 737 723 174.5
D 13 189 422897 2419.11 737 723 174.5
D 1 52 208628 1191.32 737 723 174.5

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