ASTROSAT CZTI

Data Quality Report

Orbit 26372

Creation date: 2024-06-27T19:28:16.144991
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/AS1A09_088T01_9000003812_26372cztM0_level2.evt modeM0/AS1A09_088T01_9000003812_26372cztM0_level2_quad_clean.evt
Size (bytes)755,078,400105,321,600
Size720.1 MB 100.4 MB
Events in quadrant A3,344,260743,582
Events in quadrant B3,303,200767,954
Events in quadrant C8,257,202623,754
Events in quadrant D7,549,991626,177

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138540
B0137250
C0288610
D0267630

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6121641.045581%
B6121651.061918%
C6120201632.941176%
D6120128520.996732%

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 7481 6122 4 4 0.05% 0.07%
B 7481 6122 1 1 0.01% 0.02%
C 7480 6120 1215 1215 16.24% 19.85%
D 7480 6121 1027 1027 13.73% 16.78%

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 0 13 109705 666.57 838 825 163.3
A 13 254 10204 57.42 838 825 163.3
A 0 226 7303 39.66 838 825 163.3
B 0 230 30184 193.0 840 821 152.1
B 12 111 17350 108.64 840 821 152.1
B 11 111 15658 97.52 840 821 152.1
C 3 233 5383841 34022.69 697 703 158.2
C 14 238 112372 705.77 697 703 158.2
C 4 254 23627 144.89 697 703 158.2
D 7 80 4410717 25407.4 739 721 173.6
D 11 176 132675 760.23 739 721 173.6
D 1 52 123634 708.14 739 721 173.6

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