ASTROSAT CZTI

Data Quality Report

Orbit 12259

Creation date: 2024-06-27T16:24:35.580934
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/AS1G08_006T04_9000001812_12259cztM0_level2.evt modeM0/AS1G08_006T04_9000001812_12259cztM0_level2_quad_clean.evt
Size (bytes)560,545,920127,451,520
Size534.6 MB 121.5 MB
Events in quadrant A4,154,227871,557
Events in quadrant B4,187,643877,496
Events in quadrant C4,203,361862,734
Events in quadrant D4,024,894829,199

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0163952
B0163691
C0164501
D0160131

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59992604.334056%
B59993225.367561%
C59992393.983997%
D59992494.150692%

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 7285 6001 110 110 1.51% 1.83%
B 7285 6001 138 138 1.89% 2.30%
C 7285 6001 125 125 1.72% 2.08%
D 7285 6001 129 129 1.77% 2.15%

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 14 237 310403 2025.47 770 756 152.9
A 5 16 263906 1721.32 770 756 152.9
A 13 251 174392 1135.79 770 756 152.9
B 4 239 714424 5094.84 763 748 140.1
B 4 206 233047 1658.35 763 748 140.1
B 11 51 137014 972.79 763 748 140.1
C 15 208 1253365 7429.3 742 749 168.6
C 4 175 24221 139.21 742 749 168.6
C 3 233 13083 73.15 742 749 168.6
D 1 52 847197 4768.99 747 727 177.5
D 10 199 117974 660.57 747 727 177.5
D 13 104 72751 405.78 747 727 177.5

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