ASTROSAT CZTI

Data Quality Report

Orbit 12504

Creation date: 2024-06-27T16:28:19.946523
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_174T01_9000001850_12504cztM0_level2.evt modeM0/AS1A04_174T01_9000001850_12504cztM0_level2_quad_clean.evt
Size (bytes)445,331,52085,383,360
Size424.7 MB 81.4 MB
Events in quadrant A3,379,129556,702
Events in quadrant B3,475,882564,341
Events in quadrant C2,887,857553,885
Events in quadrant D3,356,380511,610

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139152
B0139131
C0122191
D0138641

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5699621.087910%
B56991763.088261%
C5699621.087910%
D56991723.018073%

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 6970 5701 1 1 0.01% 0.02%
B 6970 5701 80 80 1.15% 1.40%
C 6970 5701 19 19 0.27% 0.33%
D 6970 5701 128 128 1.84% 2.25%

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 1 162 178844 1214.31 721 707 146.7
A 12 189 121755 825.15 721 707 146.7
A 1 178 107894 730.66 721 707 146.7
B 4 239 393534 2890.49 724 708 135.9
B 3 64 173398 1270.69 724 708 135.9
B 0 214 34717 250.25 724 708 135.9
C 7 238 64758 393.47 704 714 162.8
C 14 234 49916 302.29 704 714 162.8
C 7 239 26331 157.39 704 714 162.8
D 1 52 540194 3244.21 690 673 166.3
D 13 104 82774 493.68 690 673 166.3
D 7 71 35582 209.91 690 673 166.3

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