ASTROSAT CZTI

Data Quality Report

Orbit 22632

Creation date: 2024-06-27T18:43:48.721553
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_112T01_9000003360_22632cztM0_level2.evt modeM0/AS1A07_112T01_9000003360_22632cztM0_level2_quad_clean.evt
Size (bytes)1,686,205,440294,056,640
Size1.6 GB 280.4 MB
Events in quadrant A10,309,8451,891,117
Events in quadrant B10,614,3931,918,435
Events in quadrant C10,486,8531,849,614
Events in quadrant D18,132,4701,694,953

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0460204
B0465654
C0463634
D0696574

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04600
B04600
C04600
D04600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A225441110.492370%
B225451830.811710%
C225452771.228654%
D22545307313.630517%

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 32616 22550 0 0 0.00% 0.00%
B 32617 22551 8 8 0.02% 0.04%
C 32617 22551 10 10 0.03% 0.04%
D 32617 22551 2138 2138 6.55% 9.48%

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 13 254 35485 61.44 2666 2608 535.1
A 11 47 25568 42.91 2666 2608 535.1
A 3 137 23231 38.54 2666 2608 535.1
B 0 230 65475 124.69 2659 2589 504.4
B 12 111 63052 119.88 2659 2589 504.4
B 11 111 54960 103.84 2659 2589 504.4
C 14 238 404707 671.36 2556 2570 599.0
C 10 22 56398 89.87 2556 2570 599.0
C 0 207 32219 49.5 2556 2570 599.0
D 1 239 5005585 8621.09 2398 2336 580.3
D 7 238 2011054 3461.22 2398 2336 580.3
D 1 52 1531599 2635.07 2398 2336 580.3

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