ASTROSAT CZTI

Data Quality Report

Orbit 20170807_A03_084T01_9000001440_level2

Creation date: 2025-11-15T20:05:13.403818
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/AS1A03_084T01_9000001440cztM0_level2.fits modeM0/AS1A03_084T01_9000001440cztM0_level2_quad_clean.evt
Size (bytes)256,057,920173,891,520
Size244.2 MB 165.8 MB
Events in quadrant A1,583,050908,674
Events in quadrant B1,519,030913,796
Events in quadrant C1,545,706862,000
Events in quadrant D1,277,192751,115

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0578630
B0577980
C0549270
D0856620

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05500
B05500
C05500
D05500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0690
B0690
C0690
D0690

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A265703331.253293%
B265783161.188953%
C265861460.549161%
D2655622188.352161%

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 33748 26689 0 0 0.00% 0.00%
B 33748 26691 0 0 0.00% 0.00%
C 33748 26696 0 0 0.00% 0.00%
D 33748 26642 0 0 0.00% 0.00%

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 0 29 1536 10.9 412 388 105.3
A 7 110 1280 8.47 412 388 105.3
A 0 30 1188 7.6 412 388 105.3
B 2 9 1321 11.41 402 384 82.1
B 3 80 1028 7.84 402 384 82.1
B 12 226 1013 7.66 402 384 82.1
C 1 80 1092 6.53 408 379 109.2
C 1 81 1091 6.52 408 379 109.2
C 12 241 1067 6.3 408 379 109.2
D 3 14 983 6.65 363 330 98.2
D 6 231 951 6.32 363 330 98.2
D 6 67 912 5.92 363 330 98.2

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