ASTROSAT CZTI

Data Quality Report

Orbit 15793

Creation date: 2024-06-27T17:13:29.325825
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_100T01_9000002336_15793cztM0_level2.evt modeM0/AS1A04_100T01_9000002336_15793cztM0_level2_quad_clean.evt
Size (bytes)405,455,04087,013,440
Size386.7 MB 83.0 MB
Events in quadrant A2,752,104550,179
Events in quadrant B3,625,020559,737
Events in quadrant C2,798,589560,319
Events in quadrant D2,693,784544,263

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124002
B0146791
C0123811
D0125341

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6015120.199501%
B60152123.524522%
C6015390.648379%
D6015150.249377%

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 7176 6017 1 1 0.01% 0.02%
B 7176 6017 142 142 1.98% 2.36%
C 7176 6017 0 0 0.00% 0.00%
D 7176 6017 5 5 0.07% 0.08%

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 14 254 21678 147.2 704 690 142.6
A 15 239 17281 116.36 704 690 142.6
A 0 226 6255 39.03 704 690 142.6
B 5 65 528863 3999.01 703 689 132.1
B 10 245 179186 1351.47 703 689 132.1
B 7 220 89796 674.66 703 689 132.1
C 14 238 106339 662.5 682 687 159.5
C 0 207 14871 88.94 682 687 159.5
C 10 22 6399 35.82 682 687 159.5
D 12 221 37702 222.62 683 664 166.4
D 2 234 24636 144.09 683 664 166.4
D 2 120 23806 139.1 683 664 166.4

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