ASTROSAT CZTI

Data Quality Report

Orbit 57102

Creation date: 2026-04-18T07:13:49.102826
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_083T10_9000006566_57102cztM0_level2.fits modeM0/AS1A14_083T10_9000006566_57102cztM0_level2_quad_clean.evt
Size (bytes)444,507,84096,932,160
Size423.9 MB 92.4 MB
Events in quadrant A3,096,780650,994
Events in quadrant B3,634,832681,395
Events in quadrant C3,061,875617,301
Events in quadrant D6,163,829539,388

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136402
B0153072
C0137242
D0227512

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6393641.001095%
B63932724.254654%
C6393580.907242%
D63935608.759581%

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 7573 6394 12 12 0.16% 0.19%
B 7573 6394 128 128 1.69% 2.00%
C 7573 6394 23 23 0.30% 0.36%
D 7573 6394 585 585 7.72% 9.15%

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 131018 746.9 715 696 174.5
A 10 251 78111 443.68 715 696 174.5
A 5 113 45279 255.51 715 696 174.5
B 10 16 631378 4313.01 691 665 146.2
B 0 213 63448 429.33 691 665 146.2
B 0 63 48061 324.11 691 665 146.2
C 6 223 141874 754.97 694 689 187.0
C 12 252 66457 351.69 694 689 187.0
C 14 254 37156 195.0 694 689 187.0
D 12 33 1444996 7578.76 670 637 190.6
D 15 142 1326008 6954.42 670 637 190.6
D 7 96 217009 1135.34 670 637 190.6

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