ASTROSAT CZTI

Data Quality Report

Orbit 23845

Creation date: 2024-06-27T18:59:19.970346
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/AS1A07_001T06_9000003530_23845cztM0_level2.evt modeM0/AS1A07_001T06_9000003530_23845cztM0_level2_quad_clean.evt
Size (bytes)139,328,64035,147,520
Size132.9 MB 33.5 MB
Events in quadrant A935,641238,947
Events in quadrant B953,492243,011
Events in quadrant C983,405223,914
Events in quadrant D1,215,466219,905

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040841
B040861
C041401
D048611

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A18901839.682540%
B189020710.952381%
C189021911.587302%
D189019210.158730%

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 2025 1893 0 0 0.00% 0.00%
B 2025 1893 0 0 0.00% 0.00%
C 2025 1893 0 0 0.00% 0.00%
D 2025 1893 1 1 0.05% 0.05%

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 13 254 3089 55.66 242 235 51.3
A 3 137 2404 42.3 242 235 51.3
A 0 226 2077 35.93 242 235 51.3
B 12 111 6024 115.52 243 235 50.1
B 11 111 5137 97.82 243 235 50.1
B 14 111 4674 88.58 243 235 50.1
C 14 238 36118 630.28 235 235 56.9
C 0 10 19641 340.86 235 235 56.9
C 8 128 3639 59.79 235 235 56.9
D 8 195 284198 4731.98 238 228 60.0
D 1 52 24729 408.28 238 228 60.0
D 2 234 6861 110.53 238 228 60.0

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