ASTROSAT CZTI

Data Quality Report

Orbit 14953

Creation date: 2024-06-27T17:01:45.415769
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/AS1T02_056T01_9000002210_14953cztM0_level2.evt modeM0/AS1T02_056T01_9000002210_14953cztM0_level2_quad_clean.evt
Size (bytes)606,245,76094,783,680
Size578.2 MB 90.4 MB
Events in quadrant A3,423,964633,613
Events in quadrant B3,436,633632,651
Events in quadrant C3,298,590608,253
Events in quadrant D7,771,077552,408

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138553
B0139162
C0134542
D0275972

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63491412.220822%
B63491462.299575%
C6349911.433297%
D6349103516.301780%

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 7560 6350 0 0 0.00% 0.00%
B 7560 6350 1 1 0.01% 0.02%
C 7560 6351 0 0 0.00% 0.00%
D 7560 6350 833 833 11.02% 13.12%

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 12 189 52708 302.57 850 833 171.4
A 1 162 30649 173.91 850 833 171.4
A 3 1 23455 131.95 850 833 171.4
B 10 16 33438 208.32 836 819 156.6
B 0 189 27443 170.03 836 819 156.6
B 0 205 24738 152.76 836 819 156.6
C 3 233 152038 817.38 805 811 185.0
C 7 247 10261 51.08 805 811 185.0
C 13 61 5790 26.91 805 811 185.0
D 7 254 3934911 21527.7 772 754 182.7
D 13 172 512611 2800.88 772 754 182.7
D 13 249 249624 1361.82 772 754 182.7

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