ASTROSAT CZTI

Data Quality Report

Orbit 20181013_C04_007T04_9000002430_level2

Creation date: 2018-10-15T10:29:16.419049
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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/AS1C04_007T04_9000002430cztM0_level2_bc.evt modeM0/AS1C04_007T04_9000002430cztM0_level2_quad_clean.evt
Size (bytes)2,720,283,840925,571,520
Size2.5 GB 882.7 MB
Events in quadrant A16,155,1635,780,090
Events in quadrant B19,907,4675,901,468
Events in quadrant C16,178,7805,778,822
Events in quadrant D25,061,3775,462,066

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01581770
B01717460
C01568590
D01897410

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015220
B015220
C015220
D015220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01170
B01170
C01170
D01170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7455611181.499544%
B7455616622.229197%
C7455613911.865712%
D7455638225.126348%

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 86257 74550 16 16 0.02% 0.02%
B 86257 74549 29 29 0.03% 0.04%
C 86257 74554 15 15 0.02% 0.02%
D 86257 74550 877 877 1.02% 1.18%

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 15 174 1310442 1561.24 3842 3768 836.9
A 3 1 52449 58.16 3842 3768 836.9
A 13 248 39812 43.07 3842 3768 836.9
B 15 35 1232589 1669.88 3916 3808 735.9
B 7 220 609782 823.5 3916 3808 735.9
B 0 198 521251 703.19 3916 3808 735.9
C 3 233 1262873 1436.73 3754 3728 876.4
C 7 247 276867 311.66 3754 3728 876.4
C 0 207 199617 223.52 3754 3728 876.4
D 1 52 7356860 8528.36 3718 3578 862.2
D 2 33 1104058 1276.34 3718 3578 862.2
D 12 218 944660 1091.47 3718 3578 862.2

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