ASTROSAT CZTI

Data Quality Report

Orbit 36695

Creation date: 2024-06-27T21:30:22.840919
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/AS1T05_041T01_9000005234_36695cztM0_level2.evt modeM0/AS1T05_041T01_9000005234_36695cztM0_level2_quad_clean.evt
Size (bytes)153,717,12043,701,120
Size146.6 MB 41.7 MB
Events in quadrant A1,043,939291,623
Events in quadrant B1,052,898304,201
Events in quadrant C1,257,998298,991
Events in quadrant D1,162,780283,557

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A043301
B043141
C049101
D047061

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A199070.351759%
B199030.150754%
C1990572.864322%
D1990211.055276%

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 1990 1990 4 4 0.20% 0.20%
B 1990 1990 0 0 0.00% 0.00%
C 1990 1990 39 39 1.96% 1.96%
D 1990 1990 22 22 1.11% 1.11%

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 10 83 90350 1826.97 240 236 49.3
A 9 143 17755 355.18 240 236 49.3
A 13 6 5599 108.73 240 236 49.3
B 4 232 35825 754.59 243 237 47.2
B 0 221 20523 430.13 243 237 47.2
B 5 255 16016 334.57 243 237 47.2
C 0 10 200532 3467.16 247 249 57.8
C 15 214 91509 1579.83 247 249 57.8
C 14 254 2210 33.95 247 249 57.8
D 13 249 102581 1753.47 242 237 58.4
D 12 233 57006 972.63 242 237 58.4
D 2 250 44448 757.47 242 237 58.4

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