ASTROSAT CZTI

Data Quality Report

Orbit 52516

Creation date: 2025-06-13T16:52:49.769717
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/AS1C09_011T06_9000006478_52516cztM0_level2.fits modeM0/AS1C09_011T06_9000006478_52516cztM0_level2_quad_clean.evt
Size (bytes)908,029,44084,697,920
Size866.0 MB 80.8 MB
Events in quadrant A3,759,129683,700
Events in quadrant B6,603,842627,056
Events in quadrant C16,704,361145,581
Events in quadrant D5,971,858593,225

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0167000
B0247890
C0547330
D0228491

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7394941.271301%
B7394105614.281850%
C7394594280.362456%
D73933614.882997%

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 7394 7394 97 97 1.31% 1.31%
B 7394 7394 870 870 11.77% 11.77%
C 7394 7394 5801 5801 78.46% 78.46%
D 7393 7393 439 439 5.94% 5.94%

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 3 62 311383 1676.35 747 730 185.3
A 8 249 214850 1155.44 747 730 185.3
A 15 174 99688 534.0 747 730 185.3
B 10 44 2349919 16095.72 686 663 146.0
B 7 0 672054 4599.98 686 663 146.0
B 4 171 378935 2591.7 686 663 146.0
C 15 233 11601655 123793.12 337 333 93.7
C 15 224 2534385 27039.87 337 333 93.7
C 4 5 261936 2791.46 337 333 93.7
D 6 42 1244498 6141.63 710 679 202.5
D 11 176 448002 2208.76 710 679 202.5
D 8 176 442480 2181.49 710 679 202.5

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