ASTROSAT CZTI

Data Quality Report

Orbit 12039

Creation date: 2024-06-27T16:21:35.248230
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/AS1A03_085T02_9000001784_12039cztM0_level2.evt modeM0/AS1A03_085T02_9000001784_12039cztM0_level2_quad_clean.evt
Size (bytes)238,708,80027,708,480
Size227.7 MB 26.4 MB
Events in quadrant A1,384,886169,706
Events in quadrant B1,766,622170,059
Events in quadrant C1,326,101168,269
Events in quadrant D2,576,121146,600

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0520
B0520
C0520
D0520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A056832
B070161
C055031
D094721

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2565542.105263%
B25651375.341131%
C2565391.520468%
D256536414.191033%

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 3656 2566 0 0 0.00% 0.00%
B 3656 2566 47 47 1.29% 1.83%
C 3656 2566 0 0 0.00% 0.00%
D 3656 2566 302 302 8.26% 11.77%

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 1 162 20841 284.3 346 339 72.1
A 1 178 10058 134.77 346 339 72.1
A 1 161 8861 118.18 346 339 72.1
B 4 239 219301 3265.77 341 333 67.0
B 0 85 178951 2663.98 341 333 67.0
B 15 204 33217 490.44 341 333 67.0
C 14 234 11986 147.33 335 336 79.1
C 0 207 7189 86.67 335 336 79.1
C 13 61 2434 26.53 335 336 79.1
D 1 52 1094427 14472.98 313 304 75.6
D 8 195 137128 1809.9 313 304 75.6
D 5 222 121708 1605.92 313 304 75.6

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