ASTROSAT CZTI

Data Quality Report

Orbit 15985

Creation date: 2024-06-27T17:16:08.416945
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_046T09_9000002358_15985cztM0_level2.evt modeM0/AS1G08_046T09_9000002358_15985cztM0_level2_quad_clean.evt
Size (bytes)372,623,04075,588,480
Size355.4 MB 72.1 MB
Events in quadrant A2,702,365477,536
Events in quadrant B2,876,716483,213
Events in quadrant C2,703,455462,004
Events in quadrant D2,606,433460,259

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120382
B0124041
C0119251
D0119781

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A58151242.132416%
B58151312.252794%
C58151242.132416%
D5815681.169390%

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 6066 5816 16 16 0.26% 0.28%
B 6066 5816 4 4 0.07% 0.07%
C 6066 5816 0 0 0.00% 0.00%
D 6066 5817 2 2 0.03% 0.03%

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 15 239 74396 525.93 680 663 140.2
A 0 226 5954 37.74 680 663 140.2
A 12 96 5169 32.14 680 663 140.2
B 4 142 47890 357.45 683 662 132.1
B 4 173 27113 200.2 683 662 132.1
B 3 209 27018 199.48 683 662 132.1
C 14 238 101899 654.15 657 660 154.8
C 3 233 24609 154.74 657 660 154.8
C 9 236 11453 69.74 657 660 154.8
D 2 234 26712 160.26 667 647 162.6
D 10 70 24892 149.07 667 647 162.6
D 2 152 24664 147.67 667 647 162.6

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