ASTROSAT CZTI

Data Quality Report

Orbit 04028

Creation date: 2024-06-27T14:36:31.883492
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_173T01_9000000514_04028cztM0_level2.evt modeM0/AS1G05_173T01_9000000514_04028cztM0_level2_quad_clean.evt
Size (bytes)538,977,60079,274,880
Size514.0 MB 75.6 MB
Events in quadrant A3,837,255468,488
Events in quadrant B3,808,772470,562
Events in quadrant C3,612,847463,368
Events in quadrant D4,524,603446,243

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170355
B0168008
C0165782
D0190444

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01640
B01640
C01640
D01640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A79323724.689864%
B79303344.211854%
C79332963.731249%
D79323244.084720%

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 8483 7936 16 16 0.19% 0.20%
B 8483 7935 5 5 0.06% 0.06%
C 8483 7935 0 0 0.00% 0.00%
D 8483 7935 35 35 0.41% 0.44%

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 50 141939 724.0 938 915 194.8
A 0 118 34347 171.64 938 915 194.8
A 15 234 20146 98.73 938 915 194.8
B 4 81 78943 424.77 948 921 183.7
B 15 204 31921 168.77 948 921 183.7
B 12 111 16279 83.61 948 921 183.7
C 13 61 7688 31.66 918 920 213.8
C 8 128 7577 31.14 918 920 213.8
C 12 4 6805 27.53 918 920 213.8
D 11 132 749011 3372.46 910 880 221.8
D 2 232 92940 414.99 910 880 221.8
D 2 63 71622 318.89 910 880 221.8

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