ASTROSAT CZTI

Data Quality Report

Orbit 25996

Creation date: 2024-06-27T19:23:39.389443
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/AS1A07_068T01_9000003760_25996cztM0_level2.evt modeM0/AS1A07_068T01_9000003760_25996cztM0_level2_quad_clean.evt
Size (bytes)3,046,129,920618,923,520
Size2.8 GB 590.3 MB
Events in quadrant A20,874,6894,087,618
Events in quadrant B21,397,9534,075,934
Events in quadrant C20,965,6813,889,479
Events in quadrant D26,178,5143,808,781

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0887430
B0901310
C0889200
D01052760

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0760
B0760
C0760
D0760

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A420333780.899293%
B420334941.175267%
C420336331.505960%
D4203318294.351343%

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 49538 42037 15 15 0.03% 0.04%
B 49538 42037 33 33 0.07% 0.08%
C 49538 42037 1 1 0.00% 0.00%
D 49538 42038 1371 1371 2.77% 3.26%

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 8 255 74191 64.64 5398 5296 1065.9
A 13 254 60396 51.7 5398 5296 1065.9
A 3 137 48477 40.51 5398 5296 1065.9
B 10 245 422750 420.37 5298 5167 993.4
B 12 111 122736 118.35 5298 5167 993.4
B 0 190 114730 110.3 5298 5167 993.4
C 14 238 832269 702.53 5107 5140 1177.4
C 3 233 147264 120.71 5107 5140 1177.4
C 0 207 82639 65.82 5107 5140 1177.4
D 1 52 5824528 4774.97 5134 5010 1218.8
D 7 80 621475 505.82 5134 5010 1218.8
D 12 233 259278 208.63 5134 5010 1218.8

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