ASTROSAT CZTI

Data Quality Report

Orbit 24176

Creation date: 2024-06-27T19:03:07.374297
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/AS1A07_067T01_9000003578_24176cztM0_level2.evt modeM0/AS1A07_067T01_9000003578_24176cztM0_level2_quad_clean.evt
Size (bytes)809,256,96072,457,920
Size771.8 MB 69.1 MB
Events in quadrant A3,313,421458,407
Events in quadrant B3,326,452466,908
Events in quadrant C3,609,761446,229
Events in quadrant D13,794,026343,004

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141171
B0141151
C0150011
D0457551

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68651051.529497%
B68661241.806001%
C68661972.869211%
D6866441064.229537%

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 7360 6865 0 0 0.00% 0.00%
B 7361 6867 0 0 0.00% 0.00%
C 7361 6866 13 13 0.18% 0.19%
D 7361 6866 4003 4003 54.38% 58.30%

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 13 170 18183 100.34 855 835 172.9
A 13 254 10534 56.09 855 835 172.9
A 3 137 7538 38.77 855 835 172.9
B 12 111 19519 114.36 847 824 163.5
B 11 111 17681 103.12 847 824 163.5
B 14 111 15475 89.62 847 824 163.5
C 0 239 155676 822.91 810 814 188.2
C 2 16 151917 802.93 810 814 188.2
C 14 238 128865 680.44 810 814 188.2
D 7 238 8336796 59622.6 572 555 139.8
D 12 218 2753462 19689.39 572 555 139.8
D 8 195 315666 2253.74 572 555 139.8

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