ASTROSAT CZTI

Data Quality Report

Orbit 54284

Creation date: 2025-10-10T17:11:02.214101
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/AS1A14_126T15_9000006516_54284cztM0_level2.fits modeM0/AS1A14_126T15_9000006516_54284cztM0_level2_quad_clean.evt
Size (bytes)444,191,04097,534,080
Size423.6 MB 93.0 MB
Events in quadrant A3,186,179657,456
Events in quadrant B3,924,454699,875
Events in quadrant C4,160,461581,243
Events in quadrant D4,667,683562,693

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139982
B0160352
C0172272
D0182802

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6480791.219136%
B64801171.805556%
C64804036.219136%
D64803004.629630%

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 7645 6481 47 47 0.61% 0.73%
B 7645 6481 54 54 0.71% 0.83%
C 7645 6481 395 395 5.17% 6.09%
D 7645 6481 290 290 3.79% 4.47%

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 7 29 254374 1452.7 702 684 174.6
A 11 3 69163 392.13 702 684 174.6
A 4 3 43794 246.86 702 684 174.6
B 7 0 588166 3990.63 685 658 147.2
B 0 213 311109 2108.73 685 658 147.2
B 14 167 103150 696.17 685 658 147.2
C 1 241 1046456 5895.12 646 639 177.4
C 12 249 277462 1560.41 646 639 177.4
C 14 254 113639 636.96 646 639 177.4
D 6 239 930245 4938.01 659 628 188.3
D 11 176 354813 1881.39 659 628 188.3
D 2 153 231485 1226.28 659 628 188.3

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