ASTROSAT CZTI

Data Quality Report

Orbit 36390

Creation date: 2022-06-21T20:20:06.978307
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/AS1A11_097T24_9000005196_36390cztM0_level2.evt modeM0/AS1A11_097T24_9000005196_36390cztM0_level2_quad_clean.evt
Size (bytes)198,175,68016,067,520
Size189.0 MB 15.3 MB
Events in quadrant A1,342,38081,517
Events in quadrant B1,376,66980,271
Events in quadrant C1,385,37875,998
Events in quadrant D1,730,60573,421

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0500
B0500
C0500
D0500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A053591
B054981
C054241
D066811

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A242060.247934%
B2420220.909091%
C2420331.363636%
D2420733.016529%

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 2420 2420 0 0 0.00% 0.00%
B 2420 2420 9 9 0.37% 0.37%
C 2420 2420 21 21 0.87% 0.87%
D 2420 2420 69 69 2.85% 2.85%

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 90428 1386.57 321 316 65.0
A 13 254 4076 57.86 321 316 65.0
A 13 6 3945 55.84 321 316 65.0
B 5 172 76621 1270.42 312 306 60.1
B 15 85 36279 598.84 312 306 60.1
B 0 189 29743 490.04 312 306 60.1
C 15 214 105100 1487.0 302 304 70.5
C 0 10 93569 1323.39 302 304 70.5
C 0 207 4686 62.18 302 304 70.5
D 12 6 238288 3148.23 306 298 75.6
D 12 227 145532 1921.21 306 298 75.6
D 2 250 47098 619.09 306 298 75.6

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