ASTROSAT CZTI

Data Quality Report

Orbit 58827

Creation date: 2026-08-12T09:26:31.331310
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_106T01_9000006596_58827cztM0_level2.fits modeM0/AS1A14_106T01_9000006596_58827cztM0_level2_quad_clean.evt
Size (bytes)450,106,56095,146,560
Size429.3 MB 90.7 MB
Events in quadrant A3,332,805623,896
Events in quadrant B4,152,706644,898
Events in quadrant C3,705,272598,035
Events in quadrant D4,956,383552,761

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145461
B0168042
C0156501
D0193991

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6617911.375246%
B66173755.667221%
C66171241.873961%
D66172804.231525%

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 7432 6618 25 25 0.34% 0.38%
B 7432 6618 202 202 2.72% 3.05%
C 7432 6618 65 65 0.87% 0.98%
D 7432 6618 228 228 3.07% 3.45%

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 15 233 156282 869.53 728 709 178.9
A 10 251 116996 649.95 728 709 178.9
A 13 248 113007 627.66 728 709 178.9
B 2 247 742352 4852.0 706 679 152.9
B 5 172 142623 928.59 706 679 152.9
B 10 247 105029 682.65 706 679 152.9
C 7 64 408385 2091.93 706 700 194.9
C 13 3 254577 1302.7 706 700 194.9
C 12 249 108169 551.45 706 700 194.9
D 12 110 1853661 9386.73 697 667 197.4
D 12 248 99200 499.14 697 667 197.4
D 7 222 96556 485.75 697 667 197.4

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

TCT plots

Parameter TCT0 TCT_healed
Tct