ASTROSAT CZTI

Data Quality Report

Orbit 21668

Creation date: 2024-06-27T18:30:53.164195
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/AS1T03_143T01_9000003208_21668cztM0_level2.evt modeM0/AS1T03_143T01_9000003208_21668cztM0_level2_quad_clean.evt
Size (bytes)139,976,6404,328,640
Size133.5 MB 4.1 MB
Events in quadrant A1,137,4895,682
Events in quadrant B869,3156,223
Events in quadrant C840,0515,837
Events in quadrant D1,292,4685,500

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A044311
B034851
C033711
D048191

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1439171.181376%
B1439161.111883%
C1439110.764420%
D1438563.894298%

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 1439 1439 2 2 0.14% 0.14%
B 1439 1439 4 4 0.28% 0.28%
C 1439 1439 0 0 0.00% 0.00%
D 1438 1438 66 66 4.59% 4.59%

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 15 236 342387 8042.55 206 203 42.5
A 13 254 2243 47.95 206 203 42.5
A 0 226 1717 35.58 206 203 42.5
B 3 64 25307 615.61 212 207 40.8
B 12 111 4418 103.28 212 207 40.8
B 11 111 3909 90.8 212 207 40.8
C 14 238 32432 665.84 202 204 48.4
C 9 54 10300 208.59 202 204 48.4
C 8 208 3130 60.45 202 204 48.4
D 7 238 471474 9505.9 198 193 49.6
D 1 52 30049 602.21 198 193 49.6
D 2 136 23677 473.68 198 193 49.6

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