ASTROSAT CZTI

Data Quality Report

Orbit 56807

Creation date: 2026-03-29T12:41:34.608185
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_083T03_9000006562_56807cztM0_level2.fits modeM0/AS1A14_083T03_9000006562_56807cztM0_level2_quad_clean.evt
Size (bytes)777,602,880137,252,160
Size741.6 MB 130.9 MB
Events in quadrant A5,909,449933,201
Events in quadrant B9,882,198853,660
Events in quadrant C6,312,467832,754
Events in quadrant D5,897,388836,574

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02060
B02060
C02060
D02060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0242052
B0362782
C0265602
D0247132

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A100922192.170036%
B10092183418.172810%
C100938558.471218%
D100933123.091251%

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 11606 10091 104 104 0.90% 1.03%
B 11606 10091 1415 1415 12.19% 14.02%
C 11607 10092 733 733 6.32% 7.26%
D 11607 10092 257 257 2.21% 2.55%

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 1388063 5191.46 1079 1047 267.2
A 10 251 207795 773.84 1079 1047 267.2
A 3 62 88959 329.04 1079 1047 267.2
B 4 206 3170573 15152.84 980 941 209.2
B 5 185 1285346 6140.27 980 941 209.2
B 8 128 586895 2801.23 980 941 209.2
C 15 230 2158515 7656.72 1029 1017 281.8
C 6 13 39167 135.39 1029 1017 281.8
C 12 112 22391 75.85 1029 1017 281.8
D 2 249 619571 2108.87 1045 1000 293.3
D 6 239 547995 1864.85 1045 1000 293.3
D 2 31 234989 797.73 1045 1000 293.3

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