ASTROSAT CZTI

Data Quality Report

Orbit 53879

Creation date: 2025-09-13T10:24:34.323795
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_057T04_9000006508_53879cztM0_level2.fits modeM0/AS1A14_057T04_9000006508_53879cztM0_level2_quad_clean.evt
Size (bytes)669,493,44081,449,280
Size638.5 MB 77.7 MB
Events in quadrant A3,481,531575,798
Events in quadrant B3,040,049638,132
Events in quadrant C7,507,041477,282
Events in quadrant D10,268,529338,599

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149191
B0134351
C0266262
D0348221

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62543435.484490%
B62541372.190598%
C6253133421.333760%
D6253267942.843435%

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 7179 6255 165 165 2.30% 2.64%
B 7179 6255 11 11 0.15% 0.18%
C 7178 6254 1025 1025 14.28% 16.39%
D 7178 6254 2252 2252 31.37% 36.01%

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 15 174 700830 4111.07 686 668 170.3
A 3 62 54516 316.17 686 668 170.3
A 12 96 19333 109.59 686 668 170.3
B 5 185 80157 537.36 689 666 147.9
B 0 171 63681 425.98 689 666 147.9
B 0 213 58210 389.0 689 666 147.9
C 15 224 2724628 16367.78 607 599 166.4
C 15 158 1317115 7910.51 607 599 166.4
C 15 209 632115 3794.57 607 599 166.4
D 8 176 7009058 45263.87 537 513 154.8
D 2 172 381526 2460.72 537 513 154.8
D 6 239 326295 2104.02 537 513 154.8

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