ASTROSAT CZTI

Data Quality Report

Orbit 27782

Creation date: 2024-06-27T19:44:21.487238
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_016T01_9000004016_27782cztM0_level2.evt modeM0/AS1A10_016T01_9000004016_27782cztM0_level2_quad_clean.evt
Size (bytes)553,144,320106,853,760
Size527.5 MB 101.9 MB
Events in quadrant A3,784,590685,365
Events in quadrant B4,072,103692,373
Events in quadrant C3,834,987662,056
Events in quadrant D4,526,894649,870

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0165230
B0172650
C0165910
D0190980

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78561211.540224%
B78562102.673116%
C78562142.724033%
D78561962.494908%

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 8506 7858 1 1 0.01% 0.01%
B 8506 7858 22 22 0.26% 0.28%
C 8506 7857 0 0 0.00% 0.00%
D 8506 7860 97 97 1.14% 1.23%

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 12915 60.03 976 955 199.2
A 5 203 9942 45.11 976 955 199.2
A 3 137 9656 43.67 976 955 199.2
B 3 64 152068 793.12 971 945 190.5
B 0 190 39660 203.18 971 945 190.5
B 5 255 31873 162.31 971 945 190.5
C 14 238 148610 667.08 933 938 221.4
C 3 233 44660 197.51 933 938 221.4
C 4 175 8118 32.43 933 938 221.4
D 1 52 526067 2297.36 935 910 228.6
D 13 104 290104 1265.11 935 910 228.6
D 2 250 88082 381.34 935 910 228.6

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