ASTROSAT CZTI

Data Quality Report

Orbit 15506

Creation date: 2024-06-27T17:09:36.239871
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/AS1T02_085T01_9000002296_15506cztM0_level2.evt modeM0/AS1T02_085T01_9000002296_15506cztM0_level2_quad_clean.evt
Size (bytes)598,351,68082,100,160
Size570.6 MB 78.3 MB
Events in quadrant A3,793,507499,303
Events in quadrant B4,066,805507,107
Events in quadrant C4,180,763488,492
Events in quadrant D5,576,542473,932

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161063
B0168462
C0170162
D0215642

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74341091.466236%
B74341682.259887%
C74341241.668012%
D74343394.560129%

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 7700 7437 15 15 0.19% 0.20%
B 7700 7437 26 26 0.34% 0.35%
C 7700 7437 1 1 0.01% 0.01%
D 7700 7437 216 216 2.81% 2.90%

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 14 238 217664 1183.67 900 879 183.1
A 14 237 29076 153.96 900 879 183.1
A 9 143 22306 116.99 900 879 183.1
B 4 142 301969 1768.34 895 870 170.3
B 4 190 79426 461.36 895 870 170.3
B 0 189 43983 253.2 895 870 170.3
C 3 233 682256 3423.72 856 859 199.0
C 14 238 131361 655.71 856 859 199.0
C 10 187 12394 57.96 856 859 199.0
D 1 52 1904814 8961.01 864 836 212.5
D 10 70 222872 1045.0 864 836 212.5
D 2 16 75529 351.54 864 836 212.5

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