ASTROSAT CZTI

Data Quality Report

Orbit 25481

Creation date: 2024-06-27T19:18:10.336922
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/AS1C05_012T07_9000003718_25481cztM0_level2.evt modeM0/AS1C05_012T07_9000003718_25481cztM0_level2_quad_clean.evt
Size (bytes)556,727,040135,420,480
Size530.9 MB 129.1 MB
Events in quadrant A3,354,753930,264
Events in quadrant B3,447,614934,061
Events in quadrant C3,377,791893,889
Events in quadrant D6,189,909839,867

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147300
B0148570
C0147210
D0233950

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7233390.539195%
B7233580.801880%
C7233951.313425%
D72335978.253837%

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 7603 7234 0 0 0.00% 0.00%
B 7603 7234 1 1 0.01% 0.01%
C 7603 7234 0 0 0.00% 0.00%
D 7603 7234 397 397 5.22% 5.49%

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 13 254 11717 62.58 865 845 173.7
A 3 1 7835 40.23 865 845 173.7
A 3 137 7761 39.81 865 845 173.7
B 0 229 50322 304.47 856 832 162.5
B 0 190 30935 185.2 856 832 162.5
B 12 111 19293 113.58 856 832 162.5
C 14 238 131759 676.82 830 834 193.4
C 3 233 9688 45.77 830 834 193.4
C 13 61 5921 26.3 830 834 193.4
D 1 52 2069706 10477.68 811 787 197.5
D 8 195 709682 3590.08 811 787 197.5
D 2 244 108364 544.81 811 787 197.5

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