ASTROSAT CZTI

Data Quality Report

Orbit 44468

Creation date: 2024-06-27T23:01:44.840631
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_012T08_9000005986_44468cztM0_level2.fits modeM0/AS1A13_012T08_9000005986_44468cztM0_level2_quad_clean.evt
Size (bytes)256,017,60064,808,640
Size244.2 MB 61.8 MB
Events in quadrant A2,822,987408,119
Events in quadrant B1,954,965441,537
Events in quadrant C2,230,401418,329
Events in quadrant D2,128,343386,395

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014444
B014041
C013740
D013433

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A071
B071
C082
D082

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190427489
B0146355563
C0154265654
D0152965755

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4210350.831354%
B4403250.567795%
C4355240.551091%
D4352280.643382%

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 7010 4945 2 2 0.03% 0.04%
B 6985 5110 2 2 0.03% 0.04%
C 6966 5043 4 4 0.06% 0.08%
D 7009 5037 18 18 0.26% 0.36%

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 1057138 10890.07 456 445 97.0
A 3 137 5332 50.36 456 445 97.0
A 0 243 4266 39.38 456 445 97.0
B 5 172 43352 445.76 476 462 96.2
B 0 190 13018 130.49 476 462 96.2
B 12 111 12208 122.08 476 462 96.2
C 12 16 199608 1795.24 462 466 110.9
C 14 254 176284 1584.98 462 466 110.9
C 3 233 48734 435.13 462 466 110.9
D 13 249 106296 897.67 461 445 117.9
D 13 174 51886 436.24 461 445 117.9
D 1 52 51581 433.66 461 445 117.9

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