ASTROSAT CZTI

Data Quality Report

Orbit 32991

Creation date: 2024-06-27T20:44:19.154760
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/AS1C07_003T01_9000004754_32991cztM0_level2.evt modeM0/AS1C07_003T01_9000004754_32991cztM0_level2_quad_clean.evt
Size (bytes)96,410,88027,011,520
Size91.9 MB 25.8 MB
Events in quadrant A599,336183,163
Events in quadrant B640,281188,829
Events in quadrant C700,165177,296
Events in quadrant D887,672169,819

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A026411
B027171
C029201
D035111

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A131510.076046%
B131570.532319%
C1315201.520913%
D1315191.444867%

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 1315 1315 0 0 0.00% 0.00%
B 1315 1315 4 4 0.30% 0.30%
C 1315 1315 13 13 0.99% 0.99%
D 1315 1315 19 19 1.44% 1.44%

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 13 254 2263 64.71 153 150 32.7
A 9 143 2146 61.13 153 150 32.7
A 15 47 1541 42.6 153 150 32.7
B 5 172 18307 580.21 155 152 31.3
B 0 199 4347 134.07 155 152 31.3
B 12 111 3301 100.64 155 152 31.3
C 0 10 105635 2926.73 148 150 36.0
C 15 208 4547 122.0 148 150 36.0
C 7 247 3887 103.68 148 150 36.0
D 2 250 138689 3447.13 147 144 40.2
D 8 195 136974 3404.46 147 144 40.2
D 1 47 26516 656.16 147 144 40.2

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