ASTROSAT CZTI

Data Quality Report

Orbit 58187

Creation date: 2026-06-30T18:53:10.430814
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_042T02_9000006586_58187cztM0_level2.fits modeM0/AS1A14_042T02_9000006586_58187cztM0_level2_quad_clean.evt
Size (bytes)1,791,011,520252,901,440
Size1.7 GB 241.2 MB
Events in quadrant A8,439,4701,801,094
Events in quadrant B13,211,0401,888,858
Events in quadrant C9,006,7231,716,803
Events in quadrant D34,154,592924,726

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03920
B03920
C03920
D03920

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0394313
B0524884
C0411263
D01147453

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A192281040.540878%
B192276943.609507%
C192281170.608488%
D19228849944.201165%

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 20798 19231 4 4 0.02% 0.02%
B 20797 19230 177 177 0.85% 0.92%
C 20798 19231 73 73 0.35% 0.38%
D 20798 19229 8448 8448 40.62% 43.93%

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 3 80948 150.42 2128 2072 524.4
A 3 245 60411 111.26 2128 2072 524.4
A 11 3 29400 52.12 2128 2072 524.4
B 10 128 3775574 8449.46 2079 1997 446.6
B 2 249 234464 520.52 2079 1997 446.6
B 0 153 171972 380.59 2079 1997 446.6
C 12 252 298502 527.47 2055 2036 562.1
C 14 245 174128 306.18 2055 2036 562.1
C 15 201 166062 291.83 2055 2036 562.1
D 12 110 23428863 49359.61 1663 1591 474.6
D 6 239 1271176 2674.93 1663 1591 474.6
D 8 160 928397 1952.71 1663 1591 474.6

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