ASTROSAT CZTI

Data Quality Report

Orbit 14682

Creation date: 2024-06-27T16:58:25.954827
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/AS1A04_101T01_9000002170_14682cztM0_level2.evt modeM0/AS1A04_101T01_9000002170_14682cztM0_level2_quad_clean.evt
Size (bytes)542,733,12094,412,160
Size517.6 MB 90.0 MB
Events in quadrant A4,175,753589,800
Events in quadrant B3,757,059583,467
Events in quadrant C4,281,925585,776
Events in quadrant D3,713,041577,989

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0169973
B0161142
C0174562
D0164112

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7510730.972037%
B75101091.451398%
C7510420.559254%
D7510530.705726%

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 8236 7512 6 6 0.07% 0.08%
B 8236 7512 16 16 0.19% 0.21%
C 8236 7512 0 0 0.00% 0.00%
D 8236 7513 33 33 0.40% 0.44%

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 8 15 669088 3646.06 899 881 183.3
A 12 189 26629 140.49 899 881 183.3
A 9 143 14171 72.52 899 881 183.3
B 10 16 151392 867.01 892 867 173.6
B 15 201 39219 220.9 892 867 173.6
B 0 214 33334 187.01 892 867 173.6
C 3 233 884802 4376.52 869 874 202.0
C 13 61 6278 26.76 869 874 202.0
C 3 234 4039 15.67 869 874 202.0
D 5 222 216079 953.64 867 844 225.7
D 10 199 89210 391.52 867 844 225.7
D 2 234 35592 153.96 867 844 225.7

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