ASTROSAT CZTI

Data Quality Report

Orbit 20191015_A07_041T01_9000003234_level2

Creation date: 2019-10-17T11:15:23.813468
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/AS1A07_041T01_9000003234cztM0_level2_bc.evt modeM0/AS1A07_041T01_9000003234cztM0_level2_quad_clean.evt
Size (bytes)2,877,598,0801,177,974,720
Size2.7 GB 1.1 GB
Events in quadrant A18,037,1377,585,413
Events in quadrant B19,499,4127,695,381
Events in quadrant C17,334,1237,442,617
Events in quadrant D26,501,7487,148,676

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A017260
B017260
C017260
D017260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01771730
B01814680
C01770750
D02077050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A847418210.968834%
B847419951.174166%
C8474113821.630852%
D8474225362.992613%

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 97626 84733 24 24 0.02% 0.03%
B 97626 84733 35 35 0.04% 0.04%
C 97626 84736 61 61 0.06% 0.07%
D 97627 84734 280 280 0.29% 0.33%

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 5 16 541178 553.12 4432 4351 970.5
A 4 2 243344 246.25 4432 4351 970.5
A 13 254 150819 150.91 4432 4351 970.5
B 3 64 574918 674.9 4492 4387 845.4
B 0 197 417801 489.04 4492 4387 845.4
B 0 190 375176 438.62 4492 4387 845.4
C 10 22 697323 689.62 4270 4251 1005.0
C 10 91 143328 138.38 4270 4251 1005.0
C 8 208 36274 31.86 4270 4251 1005.0
D 1 52 5312364 5158.3 4300 4139 1029.1
D 7 238 2226590 2159.68 4300 4139 1029.1
D 2 136 922352 892.28 4300 4139 1029.1

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