ASTROSAT CZTI

Data Quality Report

Orbit 04296

Creation date: 2024-06-27T14:40:02.480529
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/AS1G05_256T01_9000000538_04296cztM0_level2.evt modeM0/AS1G05_256T01_9000000538_04296cztM0_level2_quad_clean.evt
Size (bytes)846,106,56084,611,520
Size806.9 MB 80.7 MB
Events in quadrant A3,810,062616,438
Events in quadrant B3,771,717608,035
Events in quadrant C12,652,027357,790
Events in quadrant D4,990,909563,683

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154542
B0152431
C0415591
D0190901

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59103505.922166%
B59103065.177665%
C5910468579.272420%
D591079513.451777%

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 7065 5910 277 277 3.92% 4.69%
B 7065 5910 229 229 3.24% 3.87%
C 7064 5910 4433 4433 62.75% 75.01%
D 7065 5911 722 722 10.22% 12.21%

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 15 234 766324 5780.53 656 643 132.5
A 0 199 386132 2910.26 656 643 132.5
A 8 15 44841 333.67 656 643 132.5
B 14 167 942225 7570.73 655 639 124.4
B 10 16 145175 1162.13 655 639 124.4
B 15 204 76522 610.13 655 639 124.4
C 9 144 11056272 116445.23 407 407 94.9
C 9 247 3394 31.46 407 407 94.9
C 13 61 3276 30.22 407 407 94.9
D 2 232 2391098 16446.28 604 588 145.4
D 13 239 74550 508.85 604 588 145.4
D 2 136 48223 327.72 604 588 145.4

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