ASTROSAT CZTI

Data Quality Report

Orbit 01170

Creation date: 2024-06-27T14:08:34.668982
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/AS1P01_997T03_9000000216_01170cztM0_level2.evt modeM0/AS1P01_997T03_9000000216_01170cztM0_level2_quad_clean.evt
Size (bytes)901,535,04060,707,520
Size859.8 MB 57.9 MB
Events in quadrant A5,033,634433,485
Events in quadrant B5,150,859436,504
Events in quadrant C4,911,390418,789
Events in quadrant D11,918,587242,046

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180470
B0183520
C0176760
D0388950

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0880
B0880
C0880
D0880

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A435190.206849%
B435160.137899%
C435150.114916%
D4351272362.583314%

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 4350 4350 93 93 2.14% 2.14%
B 4350 4350 101 101 2.32% 2.32%
C 4350 4350 98 98 2.25% 2.25%
D 4351 4351 3757 3757 86.35% 86.35%

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 8 14 67943 214.2 1291 1300 311.1
A 11 79 5539 13.62 1291 1300 311.1
A 3 111 4214 9.37 1291 1300 311.1
B 4 187 23650 71.29 1324 1329 313.1
B 6 53 22934 69.0 1324 1329 313.1
B 5 191 22495 67.6 1324 1329 313.1
C 15 241 207293 627.95 1180 1219 328.2
C 9 83 71362 213.74 1180 1219 328.2
C 3 111 14166 39.45 1180 1219 328.2
D 1 239 8809516 34583.2 820 846 254.7
D 2 16 15702 58.32 820 846 254.7
D 10 125 14321 52.9 820 846 254.7

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