ASTROSAT CZTI

Data Quality Report

Orbit 20170812_A03_079T02_9000001458_level2

Creation date: 2025-11-16T16:42:29.836748
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/AS1A03_079T02_9000001458cztM0_level2.fits modeM0/AS1A03_079T02_9000001458cztM0_level2_quad_clean.evt
Size (bytes)126,737,28098,441,280
Size120.9 MB 93.9 MB
Events in quadrant A786,962553,751
Events in quadrant B746,458549,044
Events in quadrant C767,766523,649
Events in quadrant D661,318477,951

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02600
B02620
C02620
D02600

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0269460
B0274300
C0259580
D0318150

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A126711761.388999%
B126661641.294805%
C12669960.757755%
D126633792.992972%

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 16141 12703 0 0 0.00% 0.00%
B 16142 12707 0 0 0.00% 0.00%
C 16142 12712 0 0 0.00% 0.00%
D 16142 12703 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 29 757 10.85 204 193 52.0
A 7 110 650 8.79 204 193 52.0
A 9 19 617 8.15 204 193 52.0
B 2 9 628 10.55 198 189 41.6
B 3 80 493 7.3 198 189 41.6
B 2 8 481 7.01 198 189 41.6
C 1 80 569 7.08 202 190 53.5
C 1 81 532 6.39 202 190 53.5
C 3 126 526 6.28 202 190 53.5
D 6 231 507 6.43 188 172 52.1
D 10 189 506 6.41 188 172 52.1
D 6 83 499 6.28 188 172 52.1

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