ASTROSAT CZTI

Data Quality Report

Orbit 00252

Creation date: 2024-06-27T13:58:27.205284
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/AS1P01_122T01_9000000026_00252cztM0_level2.evt modeM0/AS1P01_122T01_9000000026_00252cztM0_level2_quad_clean.evt
Size (bytes)845,965,44044,809,920
Size806.8 MB 42.7 MB
Events in quadrant A6,317,343249,131
Events in quadrant B6,427,652251,794
Events in quadrant C5,968,073246,209
Events in quadrant D6,554,117237,247

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0225222
B0228361
C0215441
D0232481

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A531020.037665%
B531010.018832%
C531030.056497%
D5310200.376648%

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 7016 5311 119 119 1.70% 2.24%
B 7016 5311 85 85 1.21% 1.60%
C 7016 5311 43 43 0.61% 0.81%
D 7016 5311 218 218 3.11% 4.10%

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 12 150 8588 19.04 1629 1615 366.2
A 15 250 8087 17.67 1629 1615 366.2
A 13 239 5190 9.76 1629 1615 366.2
B 2 32 212383 558.97 1618 1632 377.0
B 5 46 13608 31.76 1618 1632 377.0
B 5 2 9058 19.7 1618 1632 377.0
C 2 192 21453 47.15 1509 1567 421.7
C 1 192 11206 22.86 1509 1567 421.7
C 0 206 5305 8.86 1509 1567 421.7
D 1 4 532402 1155.71 1456 1512 459.4
D 10 154 260282 563.32 1456 1512 459.4
D 1 5 140594 302.77 1456 1512 459.4

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