ASTROSAT CZTI

Data Quality Report

Orbit 20201

Creation date: 2024-06-27T18:12:22.286816
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/AS1A06_005T02_9000002996_20201cztM0_level2.evt modeM0/AS1A06_005T02_9000002996_20201cztM0_level2_quad_clean.evt
Size (bytes)482,811,84092,560,320
Size460.4 MB 88.3 MB
Events in quadrant A3,220,578605,886
Events in quadrant B3,301,761610,923
Events in quadrant C3,182,834570,865
Events in quadrant D4,465,901552,159

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138632
B0140032
C0136062
D0180292

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6645540.812641%
B6645400.601956%
C6645370.556810%
D66451872.814146%

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 7585 6646 22 22 0.29% 0.33%
B 7585 6646 7 7 0.09% 0.11%
C 7585 6646 0 0 0.00% 0.00%
D 7585 6646 270 270 3.56% 4.06%

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 14 238 108596 662.36 799 784 162.8
A 10 253 28965 173.14 799 784 162.8
A 13 254 7873 43.55 799 784 162.8
B 7 220 52189 333.87 799 778 154.0
B 0 230 34054 216.1 799 778 154.0
B 0 183 23947 150.46 799 778 154.0
C 14 238 118499 658.38 759 764 178.8
C 3 233 94941 526.64 759 764 178.8
C 13 61 5295 25.34 759 764 178.8
D 1 52 1352152 7281.37 761 738 185.6
D 7 238 108296 579.52 761 738 185.6
D 2 120 37201 196.46 761 738 185.6

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