ASTROSAT CZTI

Data Quality Report

Orbit 58907

Creation date: 2026-08-17T18:38:17.898794
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_004T07_9000006598_58907cztM0_level2.fits modeM0/AS1A14_004T07_9000006598_58907cztM0_level2_quad_clean.evt
Size (bytes)725,520,96068,829,120
Size691.9 MB 65.6 MB
Events in quadrant A6,312,015492,753
Events in quadrant B3,420,244615,252
Events in quadrant C3,033,314559,283
Events in quadrant D13,630,0893,138

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0227111
B0142122
C0131931
D0446721

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5915122620.726965%
B59143345.647616%
C59141532.587082%
D5915589299.611158%

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 6845 5916 878 878 12.83% 14.84%
B 6844 5915 122 122 1.78% 2.06%
C 6844 5915 54 54 0.79% 0.91%
D 6844 5914 5233 5233 76.46% 88.48%

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 14 238 3752786 24141.69 629 613 155.4
A 0 24 24884 156.16 629 613 155.4
A 3 14 17873 111.05 629 613 155.4
B 4 236 215662 1515.53 658 632 141.9
B 4 201 161039 1130.55 658 632 141.9
B 4 171 115361 808.61 658 632 141.9
C 12 252 249095 1385.15 653 646 179.4
C 3 233 69006 381.12 653 646 179.4
C 12 249 42914 235.65 653 646 179.4
D 12 110 11989270 133178.97 310 294 90.0
D 11 129 296633 3291.87 310 294 90.0
D 7 222 39464 435.12 310 294 90.0

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

TCT plots

Parameter TCT0 TCT_healed
Tct