ASTROSAT CZTI

Data Quality Report

Orbit 27997

Creation date: 2024-06-27T19:46:53.163262
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/AS1A10_065T03_9000004040_27997cztM0_level2.evt modeM0/AS1A10_065T03_9000004040_27997cztM0_level2_quad_clean.evt
Size (bytes)507,107,52099,990,720
Size483.6 MB 95.4 MB
Events in quadrant A3,332,546667,367
Events in quadrant B3,897,639657,374
Events in quadrant C3,623,675617,509
Events in quadrant D4,059,581629,437

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137210
B0156040
C0147910
D0162110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6550911.389313%
B65511962.991910%
C65511722.625553%
D65502063.145038%

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 7400 6550 0 0 0.00% 0.00%
B 7401 6551 64 64 0.86% 0.98%
C 7401 6551 38 38 0.51% 0.58%
D 7400 6550 126 126 1.70% 1.92%

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 9095 47.71 863 846 172.9
A 3 137 8295 43.08 863 846 172.9
A 0 226 7353 37.64 863 846 172.9
B 10 245 490590 3033.44 845 822 161.5
B 10 247 79126 484.99 845 822 161.5
B 12 111 19962 118.55 845 822 161.5
C 3 233 247811 1301.75 811 817 189.7
C 14 238 131420 688.33 811 817 189.7
C 2 16 83223 434.31 811 817 189.7
D 7 80 509158 2625.27 810 791 193.6
D 8 195 263134 1354.77 810 791 193.6
D 1 52 208138 1070.76 810 791 193.6

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