ASTROSAT CZTI

Data Quality Report

Orbit 25943

Creation date: 2024-06-27T19:23:07.222778
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/AS1A07_068T01_9000003760_25943cztM0_level2.evt modeM0/AS1A07_068T01_9000003760_25943cztM0_level2_quad_clean.evt
Size (bytes)559,264,320110,027,520
Size533.4 MB 104.9 MB
Events in quadrant A4,148,620722,237
Events in quadrant B3,690,064730,106
Events in quadrant C3,590,657691,663
Events in quadrant D4,997,270664,267

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0172580
B0158990
C0156100
D0201430

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75221872.486041%
B75231011.342550%
C7523891.183039%
D75234055.383491%

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 8507 7524 101 101 1.19% 1.34%
B 8508 7525 3 3 0.04% 0.04%
C 8508 7525 0 0 0.00% 0.00%
D 8508 7525 306 306 3.60% 4.07%

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 13 572279 3076.89 920 901 185.7
A 12 16 25402 131.94 920 901 185.7
A 13 254 11397 56.52 920 901 185.7
B 0 190 52461 289.82 914 891 177.9
B 0 245 29274 159.51 914 891 177.9
B 12 111 21777 117.38 914 891 177.9
C 14 238 140659 681.49 872 876 205.1
C 3 233 51042 244.58 872 876 205.1
C 13 61 6157 25.75 872 876 205.1
D 1 52 1675565 8126.0 861 839 206.1
D 12 233 35783 169.55 861 839 206.1
D 2 234 30662 144.71 861 839 206.1

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