ASTROSAT CZTI

Data Quality Report

Orbit 14512

Creation date: 2024-06-27T16:56:14.737252
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/AS1G08_066T01_9000002138_14512cztM0_level2.evt modeM0/AS1G08_066T01_9000002138_14512cztM0_level2_quad_clean.evt
Size (bytes)1,686,847,680260,352,000
Size1.6 GB 248.3 MB
Events in quadrant A10,703,6861,618,844
Events in quadrant B11,694,6251,617,566
Events in quadrant C13,169,3701,609,177
Events in quadrant D13,984,5061,475,598

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04600
B04600
C04600
D04600

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0464455
B0487464
C0534054
D0575774

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A227192571.131212%
B227194552.002729%
C227195662.491307%
D2271915967.024957%

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 25180 22724 2 2 0.01% 0.01%
B 25180 22724 117 117 0.46% 0.51%
C 25180 22724 383 383 1.52% 1.69%
D 25180 22722 839 839 3.33% 3.69%

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 12 189 137169 245.94 2702 2639 547.0
A 8 15 107795 192.24 2702 2639 547.0
A 0 23 41148 70.4 2702 2639 547.0
B 10 249 375591 729.22 2684 2613 511.5
B 5 29 149620 287.42 2684 2613 511.5
B 0 189 149013 286.23 2684 2613 511.5
C 0 207 2249323 3708.72 2609 2620 605.8
C 3 233 724887 1192.28 2609 2620 605.8
C 10 22 22362 32.59 2609 2620 605.8
D 10 199 3107547 4596.1 2524 2466 675.6
D 12 110 912684 1347.29 2524 2466 675.6
D 2 120 147272 214.34 2524 2466 675.6

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