ASTROSAT CZTI

Data Quality Report

Orbit 17978

Creation date: 2024-06-27T17:43:39.394624
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/AS1C04_009T03_9000002674_17978cztM0_level2.evt modeM0/AS1C04_009T03_9000002674_17978cztM0_level2_quad_clean.evt
Size (bytes)338,094,72098,236,800
Size322.4 MB 93.7 MB
Events in quadrant A2,256,303669,920
Events in quadrant B2,483,142680,886
Events in quadrant C2,314,277654,329
Events in quadrant D2,859,125633,883

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A098730
B0105880
C099290
D0117740

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4787300.626697%
B4788691.441103%
C4788651.357561%
D47882294.782790%

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 4787 4787 0 0 0.00% 0.00%
B 4788 4788 16 16 0.33% 0.33%
C 4788 4788 2 2 0.04% 0.04%
D 4788 4788 164 164 3.43% 3.43%

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 14 237 20885 174.63 577 564 116.4
A 15 174 20707 173.1 577 564 116.4
A 0 226 4946 37.66 577 564 116.4
B 7 220 124555 1147.93 579 565 108.0
B 0 197 39916 364.32 579 565 108.0
B 0 198 12264 108.31 579 565 108.0
C 14 238 88081 676.86 561 565 129.3
C 3 233 18810 141.11 561 565 129.3
C 9 160 10687 78.29 561 565 129.3
D 7 238 501926 3448.14 549 538 145.4
D 10 70 106554 729.09 549 538 145.4
D 5 222 74882 511.28 549 538 145.4

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