ASTROSAT CZTI

Data Quality Report

Orbit 26907

Creation date: 2024-06-27T19:34:19.447694
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/AS1A09_044T01_9000003888_26907cztM0_level2.evt modeM0/AS1A09_044T01_9000003888_26907cztM0_level2_quad_clean.evt
Size (bytes)637,116,48082,143,360
Size607.6 MB 78.3 MB
Events in quadrant A4,081,720540,924
Events in quadrant B5,103,049494,674
Events in quadrant C3,384,911545,819
Events in quadrant D6,303,500469,814

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160060
B0191970
C0137770
D0230110

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62351562.502005%
B623676812.315587%
C6236771.234766%
D623671811.513791%

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 7530 6236 115 115 1.53% 1.84%
B 7531 6237 511 511 6.79% 8.19%
C 7531 6237 19 19 0.25% 0.30%
D 7531 6237 654 654 8.68% 10.49%

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 0 13 911807 5655.95 821 808 161.1
A 13 254 10500 60.17 821 808 161.1
A 3 137 6994 38.41 821 808 161.1
B 3 64 1775832 12474.87 772 756 142.3
B 10 245 209234 1465.14 772 756 142.3
B 0 189 39574 272.8 772 756 142.3
C 14 238 131913 710.73 804 812 184.5
C 0 207 97449 523.89 804 812 184.5
C 15 208 11456 57.7 804 812 184.5
D 1 52 2566160 14488.49 754 738 177.1
D 7 80 412497 2325.45 754 738 177.1
D 2 250 265761 1496.74 754 738 177.1

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