ASTROSAT CZTI

Data Quality Report

Orbit 42001

Creation date: 2024-06-27T22:35:35.988622
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/AS1A12_011T26_9000005732_42001cztM0_level2.fits modeM0/AS1A12_011T26_9000005732_42001cztM0_level2_quad_clean.evt
Size (bytes)134,470,08028,630,080
Size128.2 MB 27.3 MB
Events in quadrant A1,026,959194,330
Events in quadrant B1,597,995180,105
Events in quadrant C849,419189,986
Events in quadrant D1,362,895172,850

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040661
B059191
C035961
D052801

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1772100.564334%
B177222812.866817%
C177210.056433%
D1772593.329571%

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 3115 1773 3 3 0.10% 0.17%
B 3115 1773 164 164 5.26% 9.25%
C 3115 1773 0 0 0.00% 0.00%
D 3115 1773 51 51 1.64% 2.88%

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 231049 5394.57 200 195 42.8
A 15 223 9888 226.5 200 195 42.8
A 13 6 5018 112.7 200 195 42.8
B 0 186 797084 21168.43 187 182 37.6
B 0 190 46755 1237.14 187 182 37.6
B 5 255 6799 175.77 187 182 37.6
C 15 214 75951 1605.0 194 195 47.2
C 15 111 9839 204.32 194 195 47.2
C 8 229 3027 60.0 194 195 47.2
D 1 52 317357 6542.82 192 187 48.5
D 12 218 107880 2221.57 192 187 48.5
D 13 249 70568 1451.87 192 187 48.5

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