ASTROSAT CZTI

Data Quality Report

Orbit 16874

Creation date: 2024-06-27T17:29:05.825201
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_074T02_9000002504_16874cztM0_level2.evt modeM0/AS1A05_074T02_9000002504_16874cztM0_level2_quad_clean.evt
Size (bytes)120,594,24013,927,680
Size115.0 MB 13.3 MB
Events in quadrant A733,76282,369
Events in quadrant B722,28287,053
Events in quadrant C729,17782,004
Events in quadrant D1,376,01772,198

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A029562
B029241
C029381
D050041

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A129940.307929%
B129970.538876%
C1299181.385681%
D129915311.778291%

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 1300 1300 0 0 0.00% 0.00%
B 1300 1300 0 0 0.00% 0.00%
C 1300 1300 0 0 0.00% 0.00%
D 1300 1300 112 112 8.62% 8.62%

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 15 174 44995 1219.11 178 175 36.8
A 12 189 1788 43.87 178 175 36.8
A 0 226 1467 35.14 178 175 36.8
B 12 111 3899 103.57 183 179 35.9
B 11 111 3356 88.45 183 179 35.9
B 4 173 3226 84.83 183 179 35.9
C 14 238 27544 634.47 179 180 43.1
C 13 61 1243 24.65 179 180 43.1
C 3 233 1049 20.15 179 180 43.1
D 1 52 729688 16931.61 170 165 43.1
D 2 234 4260 95.04 170 165 43.1
D 15 145 2200 47.23 170 165 43.1

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