ASTROSAT CZTI

Data Quality Report

Orbit 57499

Creation date: 2026-05-15T00:50:44.832641
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_113T09_9000006574_57499cztM0_level2.fits modeM0/AS1A14_113T09_9000006574_57499cztM0_level2_quad_clean.evt
Size (bytes)870,773,760170,242,560
Size830.4 MB 162.4 MB
Events in quadrant A6,263,1941,114,119
Events in quadrant B9,300,9081,138,004
Events in quadrant C8,114,8651,056,357
Events in quadrant D7,617,1171,009,633

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02440
B02440
C02440
D02440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0278813
B0361833
C0328903
D0312113

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A120924643.837248%
B12093124010.253866%
C120935774.771355%
D120934263.522699%

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 12752 12095 229 229 1.80% 1.89%
B 12753 12096 641 641 5.03% 5.30%
C 12753 12096 465 465 3.65% 3.84%
D 12753 12096 401 401 3.14% 3.32%

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 13 248 1198713 3801.19 1290 1258 315.0
A 10 251 21120 63.05 1290 1258 315.0
A 13 153 16809 49.36 1290 1258 315.0
B 4 206 2688841 10022.21 1255 1204 268.2
B 0 213 809480 3014.06 1255 1204 268.2
B 5 185 325956 1211.0 1255 1204 268.2
C 15 224 2634410 7862.41 1242 1225 334.9
C 13 16 273598 813.28 1242 1225 334.9
C 14 254 141738 419.56 1242 1225 334.9
D 15 142 1497231 4204.54 1252 1191 355.8
D 8 240 384910 1078.42 1252 1191 355.8
D 2 31 285193 798.17 1252 1191 355.8

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