ASTROSAT CZTI

Data Quality Report

Orbit 28376

Creation date: 2024-06-27T19:51:07.761039
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/AS1A10_101T02_9000004084_28376cztM0_level2.evt modeM0/AS1A10_101T02_9000004084_28376cztM0_level2_quad_clean.evt
Size (bytes)543,369,60077,546,880
Size518.2 MB 74.0 MB
Events in quadrant A3,662,705460,217
Events in quadrant B4,002,780466,930
Events in quadrant C3,809,782447,577
Events in quadrant D4,458,197438,010

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158240
B0165650
C0161370
D0183160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76961782.312890%
B76972783.611797%
C76972192.845264%
D76971962.546447%

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 7806 7697 0 0 0.00% 0.00%
B 7807 7697 36 36 0.46% 0.47%
C 7807 7698 12 12 0.15% 0.16%
D 7807 7697 44 44 0.56% 0.57%

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 13 254 12836 61.64 949 926 193.2
A 3 137 9895 46.42 949 926 193.2
A 0 226 7895 36.07 949 926 193.2
B 10 245 258579 1410.91 940 916 182.6
B 12 111 23558 123.98 940 916 182.6
B 11 111 21345 111.87 940 916 182.6
C 14 238 145026 662.28 914 918 217.6
C 7 220 103408 471.01 914 918 217.6
C 13 61 6358 25.0 914 918 217.6
D 8 195 672671 3031.41 919 890 221.6
D 1 52 206017 925.63 919 890 221.6
D 2 250 68613 305.6 919 890 221.6

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