ASTROSAT CZTI

Data Quality Report

Orbit 13638

Creation date: 2024-06-27T16:43:53.667036
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/AS1G08_038T02_9000002020_13638cztM0_level2.evt modeM0/AS1G08_038T02_9000002020_13638cztM0_level2_quad_clean.evt
Size (bytes)200,545,92022,789,440
Size191.3 MB 21.7 MB
Events in quadrant A1,291,129120,928
Events in quadrant B1,471,059122,881
Events in quadrant C1,356,162135,656
Events in quadrant D1,780,777127,729

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0540
B0540
C0540
D0540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A053803
B059762
C054872
D069792

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A25331044.105803%
B25331144.500592%
C2533843.316226%
D25331144.500592%

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 2954 2536 0 0 0.00% 0.00%
B 2954 2536 0 0 0.00% 0.00%
C 2954 2536 0 0 0.00% 0.00%
D 2954 2536 14 14 0.47% 0.55%

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 4621 61.09 333 325 70.3
A 0 226 3129 39.87 333 325 70.3
A 12 194 2640 32.92 333 325 70.3
B 0 219 169003 2543.98 328 319 66.3
B 12 111 7441 107.41 328 319 66.3
B 3 209 7158 103.14 328 319 66.3
C 3 233 96262 1264.13 322 324 75.9
C 13 61 2262 25.54 322 324 75.9
C 0 207 1387 14.01 322 324 75.9
D 13 122 240338 3024.66 323 312 79.4
D 5 222 203095 2555.35 323 312 79.4
D 8 195 55874 700.16 323 312 79.4

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