ASTROSAT CZTI

Data Quality Report

Orbit 08683

Creation date: 2024-06-27T15:35:51.321329
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/AS1G07_024T01_9000001206_08683cztM0_level2.evt modeM0/AS1G07_024T01_9000001206_08683cztM0_level2_quad_clean.evt
Size (bytes)413,435,520124,776,000
Size394.3 MB 119.0 MB
Events in quadrant A2,926,948827,502
Events in quadrant B3,107,905858,425
Events in quadrant C3,019,321853,846
Events in quadrant D3,046,937808,670

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129312
B0133751
C0131261
D0133441

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6171370.599579%
B6171530.858856%
C6171560.907470%
D6171570.923675%

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 7461 6172 18 18 0.24% 0.29%
B 7461 6172 9 9 0.12% 0.15%
C 7461 6171 25 25 0.34% 0.41%
D 7461 6171 29 29 0.39% 0.47%

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 5 16 38395 253.87 736 719 148.4
A 15 174 32576 214.66 736 719 148.4
A 13 251 15972 102.78 736 719 148.4
B 10 16 53507 380.13 752 735 138.8
B 0 219 30683 215.72 752 735 138.8
B 15 85 29563 207.65 752 735 138.8
C 1 16 121103 716.24 739 742 168.0
C 4 254 13087 73.46 739 742 168.0
C 13 61 5733 29.7 739 742 168.0
D 7 71 107477 606.37 731 707 176.1
D 2 152 104878 591.61 731 707 176.1
D 2 234 27658 153.06 731 707 176.1

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