ASTROSAT CZTI

Data Quality Report

Orbit 54457

Creation date: 2025-10-22T07:51:50.541385
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_126T19_9000006518_54457cztM0_level2.fits modeM0/AS1A14_126T19_9000006518_54457cztM0_level2_quad_clean.evt
Size (bytes)517,417,92093,870,720
Size493.4 MB 89.5 MB
Events in quadrant A3,827,195615,225
Events in quadrant B3,083,162679,896
Events in quadrant C6,059,655566,321
Events in quadrant D5,679,444528,630

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0163512
B0140723
C0225222
D0214952

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64883074.731813%
B64871031.587791%
C648871210.974106%
D64885838.985820%

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 7618 6489 220 220 2.89% 3.39%
B 7618 6489 39 39 0.51% 0.60%
C 7618 6489 606 606 7.95% 9.34%
D 7618 6489 504 504 6.62% 7.77%

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 8 9 1077447 6395.52 680 667 168.4
A 4 3 27729 160.73 680 667 168.4
A 0 8 18803 107.72 680 667 168.4
B 0 213 159601 1080.84 686 664 147.0
B 5 185 88417 596.76 686 664 147.0
B 1 207 53415 358.73 686 664 147.0
C 7 64 2625471 14600.6 652 646 179.8
C 13 3 693110 3851.83 652 646 179.8
C 9 237 77393 426.91 652 646 179.8
D 8 176 1715647 9299.18 646 617 184.4
D 3 12 532378 2883.3 646 617 184.4
D 7 70 429391 2324.88 646 617 184.4

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