ASTROSAT CZTI

Data Quality Report

Orbit 53018

Creation date: 2025-07-17T11:52:17.462145
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/AS1C09_011T07_9000006488_53018cztM0_level2.fits modeM0/AS1C09_011T07_9000006488_53018cztM0_level2_quad_clean.evt
Size (bytes)1,100,090,88068,374,080
Size1.0 GB 65.2 MB
Events in quadrant A15,372,953114,358
Events in quadrant B7,506,211569,617
Events in quadrant C10,739,197375,677
Events in quadrant D6,587,448543,991

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0501012
B0268792
C0365226
D0241942

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6693572085.462423%
B6693143321.410429%
C6692283642.378960%
D669274011.057980%

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 7798 6693 5264 5264 67.50% 78.65%
B 7798 6694 1205 1205 15.45% 18.00%
C 7796 6691 2651 2651 34.00% 39.62%
D 7797 6693 796 796 10.21% 11.89%

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 9 191 12901591 136387.89 371 362 94.6
A 7 206 233362 2463.21 371 362 94.6
A 4 249 216239 2282.19 371 362 94.6
B 10 44 2479445 18432.68 628 608 134.5
B 10 128 1209298 8987.84 628 608 134.5
B 9 252 602528 4475.89 628 608 134.5
C 1 241 4715179 31313.41 541 537 150.6
C 15 224 2216435 14717.41 541 537 150.6
C 1 16 780960 5183.36 541 537 150.6
D 2 62 2928819 15519.93 652 624 188.7
D 8 176 325993 1724.51 652 624 188.7
D 15 78 244098 1290.45 652 624 188.7

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