ASTROSAT CZTI

Data Quality Report

Orbit 37025

Creation date: 2024-06-27T21:34:26.326220
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/AS1T05_046T01_9000005266_37025cztM0_level2.evt modeM0/AS1T05_046T01_9000005266_37025cztM0_level2_quad_clean.evt
Size (bytes)486,432,00084,660,480
Size463.9 MB 80.7 MB
Events in quadrant A2,843,878568,905
Events in quadrant B4,152,385539,901
Events in quadrant C3,432,737539,022
Events in quadrant D3,924,223525,547

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120033
B0160992
C0136682
D0153302

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5574190.340868%
B55744728.467887%
C55742073.713671%
D55741803.229279%

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 7306 5575 2 2 0.03% 0.04%
B 7306 5575 308 308 4.22% 5.52%
C 7306 5575 161 161 2.20% 2.89%
D 7306 5575 152 152 2.08% 2.73%

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 10 83 235343 1741.39 665 652 134.8
A 13 6 20327 145.99 665 652 134.8
A 9 143 18691 133.85 665 652 134.8
B 5 184 1319124 10814.96 633 617 121.9
B 5 172 199079 1627.87 633 617 121.9
B 0 219 37653 303.79 633 617 121.9
C 1 23 458533 3168.66 624 631 144.5
C 15 214 236777 1634.12 624 631 144.5
C 0 10 150834 1039.4 624 631 144.5
D 13 171 357682 2300.54 638 622 155.2
D 2 153 337885 2172.99 638 622 155.2
D 2 250 243651 1565.84 638 622 155.2

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