ASTROSAT CZTI

Data Quality Report

Orbit 36566

Creation date: 2024-06-27T21:28:31.103439
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/AS1A11_097T17_9000005222_36566cztM0_level2.evt modeM0/AS1A11_097T17_9000005222_36566cztM0_level2_quad_clean.evt
Size (bytes)159,995,52036,195,840
Size152.6 MB 34.5 MB
Events in quadrant A1,017,480248,285
Events in quadrant B1,211,272245,407
Events in quadrant C1,282,299236,592
Events in quadrant D1,206,646230,834

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040822
B046531
C048581
D047311

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A184720.108284%
B1847754.060639%
C1847995.360043%
D1847452.436383%

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 4001 1848 0 0 0.00% 0.00%
B 4001 1848 45 45 1.12% 2.44%
C 4001 1848 70 70 1.75% 3.79%
D 4001 1848 32 32 0.80% 1.73%

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 84989 1725.75 237 232 49.1
A 9 143 4996 97.0 237 232 49.1
A 15 223 4832 93.66 237 232 49.1
B 5 255 184940 4052.69 230 224 45.6
B 0 156 50996 1113.94 230 224 45.6
B 0 229 18046 391.02 230 224 45.6
C 0 10 251507 4636.63 224 226 54.2
C 15 214 79570 1464.05 224 226 54.2
C 14 254 63001 1158.32 224 226 54.2
D 2 153 101179 1767.6 228 224 57.1
D 13 249 47631 830.04 228 224 57.1
D 2 250 33291 578.96 228 224 57.1

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