ASTROSAT CZTI

Data Quality Report

Orbit 02144

Creation date: 2024-06-27T14:14:33.743255
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/AS1T01_072T02_9000000336_02144cztM0_level2.evt modeM0/AS1T01_072T02_9000000336_02144cztM0_level2_quad_clean.evt
Size (bytes)377,622,72079,202,880
Size360.1 MB 75.5 MB
Events in quadrant A2,623,815488,111
Events in quadrant B3,096,369501,686
Events in quadrant C2,713,652483,811
Events in quadrant D2,563,381475,280

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130202
B0136252
C0131532
D0131302

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B110
C1-1-1
D1-1-1

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A644030.046584%
B6440120.186335%
C644060.093168%
D6440150.232919%

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 7470 6441 0 0 0.00% 0.00%
B 7470 6441 12 12 0.16% 0.19%
C 7470 6441 3 3 0.04% 0.05%
D 7470 6441 10 10 0.13% 0.16%

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 15 191 19333 141.14 674 662 132.3
A 15 190 4215 26.86 674 662 132.3
A 0 1 3412 20.79 674 662 132.3
B 5 68 332284 2613.72 701 689 126.9
B 0 234 40478 313.63 701 689 126.9
B 4 216 39908 309.13 701 689 126.9
C 9 85 41009 276.46 667 670 145.9
C 10 82 38118 256.65 667 670 145.9
C 1 192 18627 123.07 667 670 145.9
D 9 64 25152 164.8 656 641 148.7
D 15 47 21784 142.15 656 641 148.7
D 10 199 13954 89.51 656 641 148.7

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