ASTROSAT CZTI

Data Quality Report

Orbit 20250

Creation date: 2024-06-27T18:13:01.600670
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/AS1A05_117T01_9000003002_20250cztM0_level2.evt modeM0/AS1A05_117T01_9000003002_20250cztM0_level2_quad_clean.evt
Size (bytes)103,959,36031,325,760
Size99.1 MB 29.9 MB
Events in quadrant A735,129219,655
Events in quadrant B723,515221,121
Events in quadrant C728,488205,158
Events in quadrant D869,391204,248

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A028961
B028591
C028891
D033742

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1310231.755725%
B1310261.984733%
C1310322.442748%
D1309433.284950%

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 1310 1310 0 0 0.00% 0.00%
B 1310 1310 0 0 0.00% 0.00%
C 1310 1310 0 0 0.00% 0.00%
D 1309 1309 16 16 1.22% 1.22%

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 10 253 7575 188.43 189 185 39.2
A 0 226 1603 36.15 189 185 39.2
A 13 254 1385 30.59 189 185 39.2
B 12 111 3981 103.67 184 180 36.7
B 11 111 3613 93.63 184 180 36.7
B 14 111 3413 88.18 184 180 36.7
C 14 238 28252 665.53 178 179 42.2
C 3 233 4610 105.05 178 179 42.2
C 13 61 1262 25.67 178 179 42.2
D 1 52 114777 2538.12 184 179 45.2
D 7 238 29187 642.47 184 179 45.2
D 11 176 25495 560.7 184 179 45.2

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