ASTROSAT CZTI

Data Quality Report

Orbit 57042

Creation date: 2026-04-14T06:08:11.583204
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_083T14_9000006564_57042cztM0_level2.fits modeM0/AS1A14_083T14_9000006564_57042cztM0_level2_quad_clean.evt
Size (bytes)546,560,64089,424,000
Size521.2 MB 85.3 MB
Events in quadrant A5,575,835540,476
Events in quadrant B5,807,495585,167
Events in quadrant C3,320,312592,683
Events in quadrant D5,024,141536,404

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0211002
B0218776
C0143962
D0195492

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6491100315.452165%
B6490105816.302003%
C6490560.862866%
D64903074.730354%

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 7541 6492 828 828 10.98% 12.75%
B 7540 6491 678 678 8.99% 10.45%
C 7540 6491 32 32 0.42% 0.49%
D 7540 6491 300 300 3.98% 4.62%

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 4 249 1620101 10100.04 644 628 160.3
A 4 13 978274 6097.21 644 628 160.3
A 7 64 195810 1217.28 644 628 160.3
B 5 185 2776399 20161.9 648 624 137.7
B 10 16 223888 1621.68 648 624 137.7
B 0 63 120998 874.34 648 624 137.7
C 1 16 223869 1217.53 671 665 183.3
C 14 254 137462 746.2 671 665 183.3
C 9 38 116066 629.49 671 665 183.3
D 15 142 1777771 9530.18 650 618 186.5
D 7 96 317871 1701.3 650 618 186.5
D 3 12 53302 282.52 650 618 186.5

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