ASTROSAT CZTI

Data Quality Report

Orbit 45245

Creation date: 2024-06-27T23:11:19.204842
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_038T03_9000006058_45245cztM0_level2.fits modeM0/AS1A13_038T03_9000006058_45245cztM0_level2_quad_clean.evt
Size (bytes)495,178,560106,404,480
Size472.2 MB 101.5 MB
Events in quadrant A5,452,945708,439
Events in quadrant B4,135,834703,164
Events in quadrant C3,817,760702,077
Events in quadrant D4,402,505640,541

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210554
B0169132
C0159262
D0175302

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67072313.444163%
B67084686.976744%
C67083274.874776%
D67082603.875969%

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 7277 6709 35 35 0.48% 0.52%
B 7278 6710 323 323 4.44% 4.81%
C 7278 6710 162 162 2.23% 2.41%
D 7278 6711 128 128 1.76% 1.91%

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 2272952 14286.31 761 746 159.0
A 13 248 96931 604.76 761 746 159.0
A 12 227 76160 474.16 761 746 159.0
B 5 32 1089966 7354.94 743 720 148.1
B 12 3 61971 413.58 743 720 148.1
B 5 172 36773 243.44 743 720 148.1
C 14 254 606731 3436.02 752 754 176.4
C 12 250 172153 971.87 752 754 176.4
C 3 233 37377 207.66 752 754 176.4
D 13 249 360449 1888.68 753 730 190.5
D 12 17 289576 1516.56 753 730 190.5
D 11 241 153044 799.71 753 730 190.5

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