ASTROSAT CZTI

Data Quality Report

Orbit 33151

Creation date: 2024-06-27T20:45:29.133960
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/AS1A11_096T01_9000004766_33151cztM0_level2.evt modeM0/AS1A11_096T01_9000004766_33151cztM0_level2_quad_clean.evt
Size (bytes)510,318,72083,949,120
Size486.7 MB 80.1 MB
Events in quadrant A2,402,111576,617
Events in quadrant B3,411,780574,324
Events in quadrant C3,217,658549,802
Events in quadrant D6,074,869480,547

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0103943
B0135592
C0128482
D0216332

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A514070.136187%
B5140981.906615%
C51402324.513619%
D5140100719.591440%

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 7022 5141 0 0 0.00% 0.00%
B 7022 5141 44 44 0.63% 0.86%
C 7022 5141 189 189 2.69% 3.68%
D 7022 5141 810 810 11.54% 15.76%

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 6 11718 90.31 615 604 123.1
A 13 254 9658 73.57 615 604 123.1
A 14 235 6515 48.03 615 604 123.1
B 0 219 471011 4041.85 614 601 116.4
B 0 189 200290 1715.76 614 601 116.4
B 5 172 140025 1197.96 614 601 116.4
C 1 241 590543 4346.44 582 586 135.7
C 0 10 207336 1523.21 582 586 135.7
C 9 187 70978 518.6 582 586 135.7
D 2 250 2451405 18240.31 542 530 134.4
D 8 195 719990 5354.48 542 530 134.4
D 12 218 174311 1293.34 542 530 134.4

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