ASTROSAT CZTI

Data Quality Report

Orbit 32852

Creation date: 2024-06-27T20:42:58.726386
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_088T02_9000004740_32852cztM0_level2.evt modeM0/AS1A11_088T02_9000004740_32852cztM0_level2_quad_clean.evt
Size (bytes)1,161,889,920114,197,760
Size1.1 GB 108.9 MB
Events in quadrant A5,069,062699,056
Events in quadrant B6,916,548689,981
Events in quadrant C6,369,818687,790
Events in quadrant D16,103,408631,502

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02200
B02200
C02200
D02200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220413
B0274772
C0258822
D0555092

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10829150.138517%
B108294874.497183%
C108292532.336319%
D10829275325.422477%

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 13605 10831 4 4 0.03% 0.04%
B 13605 10831 328 328 2.41% 3.03%
C 13605 10831 155 155 1.14% 1.43%
D 13605 10831 2390 2390 17.57% 22.07%

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 9 143 81155 307.78 1278 1254 259.6
A 15 174 21850 79.34 1278 1254 259.6
A 13 254 20910 75.71 1278 1254 259.6
B 5 172 875604 3616.95 1262 1230 241.7
B 15 201 596563 2462.67 1262 1230 241.7
B 0 219 122225 500.51 1262 1230 241.7
C 3 233 897368 3162.91 1225 1235 283.3
C 0 10 454893 1601.19 1225 1235 283.3
C 1 241 86841 302.15 1225 1235 283.3
D 8 195 4480048 15637.05 1138 1111 286.4
D 12 227 2342228 8173.4 1138 1111 286.4
D 10 203 1389401 4846.86 1138 1111 286.4

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