ASTROSAT CZTI

Data Quality Report

Orbit 57435

Creation date: 2026-05-10T17:14:01.715457
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_102T01_9000006572_57435cztM0_level2.fits modeM0/AS1A14_102T01_9000006572_57435cztM0_level2_quad_clean.evt
Size (bytes)471,551,04099,691,200
Size449.7 MB 95.1 MB
Events in quadrant A3,243,494667,666
Events in quadrant B3,232,797713,806
Events in quadrant C5,503,173613,028
Events in quadrant D4,949,810552,685

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144091
B0144871
C0209911
D0195181

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6767851.256096%
B6768991.462766%
C67684636.841017%
D67686479.559693%

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 7822 6767 26 26 0.33% 0.38%
B 7823 6768 38 38 0.49% 0.56%
C 7823 6768 410 410 5.24% 6.06%
D 7823 6768 581 581 7.43% 8.58%

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 3 14 133459 727.68 750 734 182.4
A 7 64 110942 604.23 750 734 182.4
A 10 251 57560 311.56 750 734 182.4
B 10 247 186049 1181.76 734 705 156.8
B 0 213 23521 145.48 734 705 156.8
B 0 63 22328 137.87 734 705 156.8
C 15 224 1591560 8233.46 710 705 193.2
C 6 223 348674 1800.91 710 705 193.2
C 14 245 297029 1533.62 710 705 193.2
D 15 142 1845515 9427.64 693 659 195.7
D 7 96 115358 586.14 693 659 195.7
D 8 240 64954 328.56 693 659 195.7

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