ASTROSAT CZTI

Data Quality Report

Orbit 39040

Creation date: 2024-06-27T21:59:15.547983
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_9000005426_39040cztM0_level2.fits modeM0/AS1A12_077T06_9000005426_39040cztM0_level2_quad_clean.evt
Size (bytes)236,940,48058,553,280
Size226.0 MB 55.8 MB
Events in quadrant A3,621,827370,802
Events in quadrant B1,530,458419,590
Events in quadrant C1,637,233393,639
Events in quadrant D1,735,919366,627

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129751
B064141
C065931
D071201

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0620
B0620
C0620
D0620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A313440612.954690%
B313450.159541%
C313430.095724%
D3134230.733886%

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 3134 3134 345 345 11.01% 11.01%
B 3134 3134 2 2 0.06% 0.06%
C 3134 3134 1 1 0.03% 0.03%
D 3134 3134 23 23 0.73% 0.73%

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 1888719 24996.17 373 367 75.5
A 10 83 237447 3138.23 373 367 75.5
A 6 10 28995 378.95 373 367 75.5
B 15 85 25193 341.98 381 371 72.6
B 12 111 8698 114.72 381 371 72.6
B 11 111 8151 107.19 381 371 72.6
C 15 214 129689 1467.25 376 379 88.1
C 3 233 13489 148.76 376 379 88.1
C 2 16 10067 109.93 376 379 88.1
D 2 249 133661 1422.07 380 370 93.7
D 2 250 73676 782.1 380 370 93.7
D 12 233 26482 278.59 380 370 93.7

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