ASTROSAT CZTI

Data Quality Report

Orbit 11690

Creation date: 2024-06-27T16:16:57.788348
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/AS1A04_227T01_9000001724_11690cztM0_level2.evt modeM0/AS1A04_227T01_9000001724_11690cztM0_level2_quad_clean.evt
Size (bytes)599,336,64092,692,800
Size571.6 MB 88.4 MB
Events in quadrant A4,776,160580,150
Events in quadrant B4,913,365577,206
Events in quadrant C3,135,672604,566
Events in quadrant D4,864,831570,399

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0188363
B0191632
C0138822
D0188832

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68103054.478708%
B68104756.975037%
C6810300.440529%
D68102463.612335%

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 8695 6812 169 169 1.94% 2.48%
B 8696 6813 228 228 2.62% 3.35%
C 8696 6813 0 0 0.00% 0.00%
D 8696 6813 209 209 2.40% 3.07%

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 5 1134906 6845.4 806 786 165.7
A 1 162 198555 1193.71 806 786 165.7
A 1 178 110359 661.37 806 786 165.7
B 4 239 972572 6243.26 804 783 155.7
B 3 64 452940 2904.88 804 783 155.7
B 3 189 163455 1045.09 804 783 155.7
C 13 61 5848 27.0 804 809 186.6
C 12 4 2447 8.78 804 809 186.6
C 3 202 1947 6.1 804 809 186.6
D 13 152 1003002 5244.67 791 770 191.1
D 13 104 348627 1820.33 791 770 191.1
D 8 195 323097 1686.73 791 770 191.1

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