ASTROSAT CZTI

Data Quality Report

Orbit 25136

Creation date: 2024-06-27T19:14:10.236139
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/AS1A07_091T03_9000003678_25136cztM0_level2.evt modeM0/AS1A07_091T03_9000003678_25136cztM0_level2_quad_clean.evt
Size (bytes)838,391,040136,506,240
Size799.6 MB 130.2 MB
Events in quadrant A5,139,452861,867
Events in quadrant B5,229,069872,504
Events in quadrant C6,367,608829,338
Events in quadrant D7,900,157798,561

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0225410
B0227400
C0258530
D0307500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11152590.529053%
B11153650.582803%
C111531571.407693%
D111537486.706716%

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 11562 11153 1 1 0.01% 0.01%
B 11563 11154 2 2 0.02% 0.02%
C 11563 11154 12 12 0.10% 0.11%
D 11563 11154 539 539 4.66% 4.83%

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 16692 57.16 1328 1298 269.3
A 3 137 12418 41.29 1328 1298 269.3
A 0 226 11264 37.0 1328 1298 269.3
B 0 190 33516 127.08 1317 1284 253.6
B 12 111 31576 119.43 1317 1284 253.6
B 11 111 28534 107.44 1317 1284 253.6
C 7 247 1115466 3742.24 1273 1283 297.7
C 14 238 201850 673.65 1273 1283 297.7
C 9 54 43677 142.39 1273 1283 297.7
D 1 52 2354180 7525.87 1260 1220 312.6
D 8 195 494847 1578.85 1260 1220 312.6
D 2 244 132818 420.91 1260 1220 312.6

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