ASTROSAT CZTI

Data Quality Report

Orbit 42632

Creation date: 2024-06-27T22:42:26.372153
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/AS1A05_174T01_9000005820_42632cztM0_level2.fits modeM0/AS1A05_174T01_9000005820_42632cztM0_level2_quad_clean.evt
Size (bytes)316,604,16095,944,320
Size301.9 MB 91.5 MB
Events in quadrant A2,960,450640,591
Events in quadrant B2,524,716665,132
Events in quadrant C2,829,661641,092
Events in quadrant D2,981,888578,940

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0260
C0260
D0260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119542
B0110342
C0114742
D0126092

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5426110.202728%
B542660.110579%
C542670.129008%
D5426921.695540%

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 7369 5427 1 1 0.01% 0.02%
B 7369 5427 1 1 0.01% 0.02%
C 7369 5427 4 4 0.05% 0.07%
D 7369 5427 88 88 1.19% 1.62%

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 10 83 550775 4309.71 620 606 127.7
A 13 254 6820 48.68 620 606 127.7
A 3 137 6621 47.12 620 606 127.7
B 0 245 74364 616.53 618 600 119.6
B 7 202 16149 129.96 618 600 119.6
B 12 111 14970 120.11 618 600 119.6
C 15 214 227593 1570.42 619 623 144.5
C 14 254 172300 1187.84 619 623 144.5
C 3 233 15106 100.21 619 623 144.5
D 12 6 375188 2507.98 612 597 149.4
D 13 249 135800 905.22 612 597 149.4
D 1 47 57984 384.22 612 597 149.4

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