ASTROSAT CZTI

Data Quality Report

Orbit 38188

Creation date: 2024-06-27T21:49:31.685222
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_145T01_9000005370_38188cztM0_level2.fits modeM0/AS1A07_145T01_9000005370_38188cztM0_level2_quad_clean.evt
Size (bytes)346,092,48093,905,280
Size330.1 MB 89.6 MB
Events in quadrant A2,905,197639,030
Events in quadrant B2,751,622655,489
Events in quadrant C2,558,276633,722
Events in quadrant D4,203,724562,145

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116603
B0113352
C0104402
D0159712

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5043180.356930%
B5043841.665675%
C5043110.218124%
D50431893.747769%

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 7165 5044 18 18 0.25% 0.36%
B 7165 5044 72 72 1.00% 1.43%
C 7165 5044 8 8 0.11% 0.16%
D 7165 5044 181 181 2.53% 3.59%

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 352162 2926.31 601 591 120.1
A 9 143 178646 1482.05 601 591 120.1
A 12 189 44263 363.5 601 591 120.1
B 5 184 153361 1341.26 601 584 113.9
B 4 171 88678 773.4 601 584 113.9
B 5 172 59313 515.59 601 584 113.9
C 15 214 211903 1559.38 588 593 135.5
C 0 10 26823 193.57 588 593 135.5
C 14 254 19463 139.25 588 593 135.5
D 2 16 1012669 7284.68 572 557 138.9
D 13 138 312793 2247.32 572 557 138.9
D 12 227 253377 1819.67 572 557 138.9

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