ASTROSAT CZTI

Data Quality Report

Orbit 20160107_G02_010T01_9000000252_level2

Creation date: 2020-10-16T20:59:45.839739
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/AS1G02_010T01_9000000252cztM0_level2_bc.evt modeM0/AS1G02_010T01_9000000252cztM0_level2_quad_clean.evt
Size (bytes)2,922,174,7201,220,892,480
Size2.7 GB 1.1 GB
Events in quadrant A17,448,3717,892,765
Events in quadrant B18,585,8327,985,196
Events in quadrant C18,515,4007,835,689
Events in quadrant D27,972,1157,257,251

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09550
B09550
C09550
D09550

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04025830
B04153150
C03935020
D04215210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A936115640.602493%
B938056180.658813%
C938903990.424965%
D9381342794.561202%

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 113124 93610 0 0 0.00% 0.00%
B 113124 93800 8 8 0.01% 0.01%
C 113124 93888 29 29 0.03% 0.03%
D 113124 93805 287 287 0.25% 0.31%

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 8 14 90347 91.28 4419 4330 942.3
A 8 15 81552 81.95 4419 4330 942.3
A 13 9 74145 74.09 4419 4330 942.3
B 6 53 185821 224.37 4521 4403 808.6
B 0 234 167839 202.13 4521 4403 808.6
B 12 52 147265 176.68 4521 4403 808.6
C 15 241 392879 424.45 4370 4328 915.4
C 9 52 387376 418.44 4370 4328 915.4
C 9 54 116222 122.23 4370 4328 915.4
D 10 84 7541633 8089.07 4238 4122 931.8
D 7 85 1263988 1352.06 4238 4122 931.8
D 13 53 746166 796.34 4238 4122 931.8

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