ASTROSAT CZTI

Data Quality Report

Orbit 25876

Creation date: 2024-06-27T19:22:21.837662
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/AS1A07_068T01_9000003756_25876cztM0_level2.evt modeM0/AS1A07_068T01_9000003756_25876cztM0_level2_quad_clean.evt
Size (bytes)638,838,72092,952,000
Size609.2 MB 88.6 MB
Events in quadrant A3,405,703621,058
Events in quadrant B3,600,515620,292
Events in quadrant C3,577,919590,807
Events in quadrant D8,331,640537,476

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142550
B0147180
C0147530
D0291890

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6375620.972549%
B63751512.368627%
C63751732.713725%
D6374158724.898023%

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 7350 6376 0 0 0.00% 0.00%
B 7350 6376 38 38 0.52% 0.60%
C 7350 6376 23 23 0.31% 0.36%
D 7349 6375 1464 1464 19.92% 22.96%

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 278727 1706.58 811 796 162.9
A 13 254 9373 52.67 811 796 162.9
A 3 137 7378 40.42 811 796 162.9
B 10 245 414325 2698.88 795 775 153.2
B 5 172 32538 207.29 795 775 153.2
B 0 219 29270 185.96 795 775 153.2
C 3 233 450938 2520.88 768 775 178.6
C 14 238 123119 685.12 768 775 178.6
C 2 16 7902 39.91 768 775 178.6
D 7 80 3226339 18362.33 735 718 175.7
D 12 233 1276650 7263.43 735 718 175.7
D 7 223 909368 5172.63 735 718 175.7

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