ASTROSAT CZTI

Data Quality Report

Orbit 17287

Creation date: 2024-06-27T17:34:34.380942
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/AS1A05_010T02_9000002556_17287cztM0_level2.evt modeM0/AS1A05_010T02_9000002556_17287cztM0_level2_quad_clean.evt
Size (bytes)799,179,840111,277,440
Size762.2 MB 106.1 MB
Events in quadrant A4,754,465755,373
Events in quadrant B3,959,848758,700
Events in quadrant C3,949,535718,869
Events in quadrant D10,965,922547,546

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0199412
B0174332
C0173382
D0385252

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01740
B01740
C01740
D01740

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A84751031.215339%
B84761271.498348%
C84751661.958702%
D8475267831.598820%

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 9210 8480 3 3 0.03% 0.04%
B 9211 8481 0 0 0.00% 0.00%
C 9210 8480 0 0 0.00% 0.00%
D 9210 8476 2369 2369 25.72% 27.95%

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 0 23 811165 3950.95 1006 984 205.1
A 0 226 57758 276.87 1006 984 205.1
A 15 174 18214 84.02 1006 984 205.1
B 12 111 24026 118.67 1006 980 194.2
B 11 111 20623 101.14 1006 980 194.2
B 14 111 17984 87.56 1006 980 194.2
C 14 238 145284 637.28 961 966 226.5
C 3 233 61136 265.7 961 966 226.5
C 13 61 6761 25.59 961 966 226.5
D 11 176 6973401 34186.58 831 806 204.0
D 13 232 482846 2363.44 831 806 204.0
D 10 70 304189 1487.48 831 806 204.0

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