ASTROSAT CZTI

Data Quality Report

Orbit 24377

Creation date: 2024-06-27T19:05:21.075878
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/AS1A08_008T01_9000003596_24377cztM0_level2.evt modeM0/AS1A08_008T01_9000003596_24377cztM0_level2_quad_clean.evt
Size (bytes)480,139,20092,401,920
Size457.9 MB 88.1 MB
Events in quadrant A3,226,406588,242
Events in quadrant B3,311,465605,930
Events in quadrant C4,255,173574,104
Events in quadrant D3,295,963565,963

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136622
B0137952
C0169092
D0140472

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0240
C0240
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6660470.705706%
B6660510.765766%
C66601552.327327%
D6660520.780781%

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 7840 6661 0 0 0.00% 0.00%
B 7840 6661 0 0 0.00% 0.00%
C 7840 6661 14 14 0.18% 0.21%
D 7840 6661 8 8 0.10% 0.12%

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 10802 60.14 835 818 166.0
A 3 137 7080 37.72 835 818 166.0
A 0 226 6990 37.18 835 818 166.0
B 12 111 18514 113.79 839 820 155.5
B 11 111 16618 101.6 839 820 155.5
B 0 190 15916 97.09 839 820 155.5
C 7 247 496131 2696.11 808 814 183.7
C 2 16 470829 2558.38 808 814 183.7
C 14 238 132602 717.35 808 814 183.7
D 1 52 63633 319.58 816 793 196.6
D 12 233 52561 263.27 816 793 196.6
D 8 195 49839 249.43 816 793 196.6

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