ASTROSAT CZTI

Data Quality Report

Orbit 12904

Creation date: 2024-06-27T16:33:46.527265
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/AS1A04_116T01_9000001896_12904cztM0_level2.evt modeM0/AS1A04_116T01_9000001896_12904cztM0_level2_quad_clean.evt
Size (bytes)1,252,056,960198,535,680
Size1.2 GB 189.3 MB
Events in quadrant A5,954,1651,376,734
Events in quadrant B14,865,2811,131,517
Events in quadrant C5,649,6881,362,765
Events in quadrant D10,577,0771,247,421

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02640
B02640
C02640
D02640

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0265124
B0528943
C0260543
D0404073

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12917340.263219%
B12917404131.284354%
C12917200.154835%
D1291710688.268174%

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 14168 12920 0 0 0.00% 0.00%
B 14168 12919 2687 2687 18.97% 20.80%
C 14168 12920 0 0 0.00% 0.00%
D 14168 12920 962 962 6.79% 7.45%

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 12 189 98283 321.1 1487 1453 301.6
A 1 162 45940 147.52 1487 1453 301.6
A 11 29 40670 130.05 1487 1453 301.6
B 0 85 5903451 25336.51 1228 1198 233.0
B 4 239 3715244 15943.23 1228 1198 233.0
B 3 64 242365 1035.25 1228 1198 233.0
C 8 128 11117 29.03 1443 1449 333.1
C 13 61 10750 27.93 1443 1449 333.1
C 8 112 6645 15.6 1443 1449 333.1
D 1 52 3306182 9756.63 1395 1351 338.7
D 14 35 885948 2611.54 1395 1351 338.7
D 13 122 750500 2211.66 1395 1351 338.7

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