ASTROSAT CZTI

Data Quality Report

Orbit 12768

Creation date: 2024-06-27T16:32:02.554161
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_110T04_9000001886_12768cztM0_level2.evt modeM0/AS1A04_110T04_9000001886_12768cztM0_level2_quad_clean.evt
Size (bytes)185,284,80044,804,160
Size176.7 MB 42.7 MB
Events in quadrant A1,172,100304,996
Events in quadrant B1,475,499303,661
Events in quadrant C1,128,851300,830
Events in quadrant D1,673,430277,979

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0480
B0480
C0480
D0480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A049552
B058841
C048601
D065191

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2340512.179487%
B23401436.111111%
C2340321.367521%
D23401797.649573%

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 3416 2342 0 0 0.00% 0.00%
B 3416 2342 55 55 1.61% 2.35%
C 3416 2342 0 0 0.00% 0.00%
D 3416 2342 89 89 2.61% 3.80%

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 12 189 15347 239.53 298 291 62.9
A 8 15 5776 87.26 298 291 62.9
A 8 6 3865 56.86 298 291 62.9
B 4 239 287725 4984.63 291 282 57.7
B 0 219 13123 222.68 291 282 57.7
B 0 85 12500 211.88 291 282 57.7
C 13 61 2136 27.5 288 288 67.2
C 0 207 1692 20.89 288 288 67.2
C 8 222 1337 15.61 288 288 67.2
D 1 52 470852 6780.38 280 271 69.4
D 8 195 85960 1234.65 280 271 69.4
D 2 136 39880 570.71 280 271 69.4

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