ASTROSAT CZTI

Data Quality Report

Orbit 39434

Creation date: 2024-06-27T22:04:31.037880
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/AS1A12_077T06_9000005474_39434cztM0_level2.fits modeM0/AS1A12_077T06_9000005474_39434cztM0_level2_quad_clean.evt
Size (bytes)462,363,84086,088,960
Size440.9 MB 82.1 MB
Events in quadrant A7,354,671499,067
Events in quadrant B3,055,201616,998
Events in quadrant C3,829,493577,665
Events in quadrant D2,465,811543,201

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0255373
B0127182
C0148622
D0113532

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5277127524.161455%
B52771913.619481%
C52772124.017434%
D5277370.701156%

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 7370 5278 1230 1230 16.69% 23.30%
B 7370 5278 139 139 1.89% 2.63%
C 7370 5278 224 224 3.04% 4.24%
D 7370 5278 23 23 0.31% 0.44%

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 15 222 4767566 43146.5 547 538 110.5
A 10 83 425396 3845.4 547 538 110.5
A 15 174 20707 182.55 547 538 110.5
B 5 172 586502 5272.58 580 566 111.1
B 8 3 176224 1580.67 580 566 111.1
B 12 111 13635 117.6 580 566 111.1
C 15 208 1186144 9161.3 558 561 129.4
C 15 214 220423 1698.93 558 561 129.4
C 9 187 201647 1553.84 558 561 129.4
D 2 249 85675 628.36 564 548 135.5
D 12 227 79226 580.75 564 548 135.5
D 13 249 45531 332.04 564 548 135.5

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