ASTROSAT CZTI

Data Quality Report

Orbit 44099

Creation date: 2024-06-27T22:59:23.233482
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/AS1A13_038T01_9000005944_44099cztM0_level2.fits modeM0/AS1A13_038T01_9000005944_44099cztM0_level2_quad_clean.evt
Size (bytes)737,654,40091,362,240
Size703.5 MB 87.1 MB
Events in quadrant A13,524,93544,564
Events in quadrant B3,809,730812,116
Events in quadrant C3,145,182778,219
Events in quadrant D6,278,008642,557

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0450633
B0163452
C0145672
D0236382

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7021667595.071927%
B70211542.193420%
C7021170.242131%
D702179411.308930%

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 8035 7019 3283 3283 40.86% 46.77%
B 8036 7022 25 25 0.31% 0.36%
C 8036 7022 3 3 0.04% 0.04%
D 8036 7021 643 643 8.00% 9.16%

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 15 223 12538198 366525.81 157 154 34.2
A 10 83 351403 10268.09 157 154 34.2
A 15 239 15569 450.63 157 154 34.2
B 15 36 273278 1742.11 797 772 156.4
B 4 171 216114 1376.67 797 772 156.4
B 0 200 66290 418.85 797 772 156.4
C 14 254 48268 259.0 781 787 183.3
C 14 96 33255 177.1 781 787 183.3
C 3 233 15466 80.07 781 787 183.3
D 1 52 1328989 7175.99 732 708 185.1
D 5 235 702754 3792.78 732 708 185.1
D 13 249 544464 2937.62 732 708 185.1

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