ASTROSAT CZTI

Data Quality Report

Orbit 25918

Creation date: 2024-06-27T19:22:47.362591
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_9000003756_25918cztM0_level2.evt modeM0/AS1A07_068T01_9000003756_25918cztM0_level2_quad_clean.evt
Size (bytes)461,318,40041,754,240
Size439.9 MB 39.8 MB
Events in quadrant A7,712,588210,095
Events in quadrant B1,889,029264,095
Events in quadrant C1,979,719249,468
Events in quadrant D2,109,205248,900

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0257530
B083530
C086050
D088570

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4122209150.727802%
B412360.145525%
C4123280.679117%
D412320.048508%

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 4122 4122 1881 1881 45.63% 45.63%
B 4123 4123 2 2 0.05% 0.05%
C 4123 4123 7 7 0.17% 0.17%
D 4123 4123 1 1 0.02% 0.02%

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 0 13 6103367 72596.41 411 403 84.1
A 6 16 11436 131.24 411 403 84.1
A 12 16 7732 87.18 411 403 84.1
B 10 245 16534 174.64 471 459 92.0
B 12 111 11313 117.92 471 459 92.0
B 11 111 10271 106.6 471 459 92.0
C 3 233 75704 701.73 454 456 107.2
C 14 238 74161 687.34 454 456 107.2
C 2 16 61709 571.22 454 456 107.2
D 1 52 191835 1731.04 460 448 110.6
D 7 80 169674 1530.6 460 448 110.6
D 2 234 17671 155.78 460 448 110.6

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