ASTROSAT CZTI

Data Quality Report

Orbit 20191107_A07_018T02_9000003288_level2

Creation date: 2025-12-05T16:37:31.553903
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_018T02_9000003288cztM0_level2.fits modeM0/AS1A07_018T02_9000003288cztM0_level2_quad_clean.evt
Size (bytes)103,518,72084,263,040
Size98.7 MB 80.4 MB
Events in quadrant A648,764482,660
Events in quadrant B625,188490,619
Events in quadrant C621,364458,875
Events in quadrant D541,530420,049

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210350
B0211440
C0208880
D0237530

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02060
B02060
C02060
D02060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10085420.416460%
B10085640.634606%
C10085750.743679%
D10085630.624690%

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 11244 10084 0 0 0.00% 0.00%
B 11244 10084 0 0 0.00% 0.00%
C 11244 10084 0 0 0.00% 0.00%
D 11244 10084 0 0 0.00% 0.00%

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 29 645 11.45 168 159 42.5
A 0 30 513 8.34 168 159 42.5
A 9 19 506 8.17 168 159 42.5
B 2 9 519 10.22 165 157 35.4
B 2 8 442 8.05 165 157 35.4
B 3 80 429 7.68 165 157 35.4
C 12 241 463 7.13 163 153 43.4
C 3 203 460 7.07 163 153 43.4
C 3 202 455 6.95 163 153 43.4
D 7 3 401 6.06 154 140 43.0
D 4 160 381 5.6 154 140 43.0
D 7 5 377 5.51 154 140 43.0

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