ASTROSAT CZTI

Data Quality Report

Orbit 58964

Creation date: 2026-08-21T13:40:01.386314
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_58964cztM0_level2.fits modeM0/AS1A14_004T07_9000006598_58964cztM0_level2_quad_clean.evt
Size (bytes)569,980,80092,808,000
Size543.6 MB 88.5 MB
Events in quadrant A3,782,628651,123
Events in quadrant B7,153,031546,271
Events in quadrant C4,400,404597,599
Events in quadrant D5,262,696566,388

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155342
B0255642
C0174832
D0200152

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0240
C0240
D0240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64421672.592363%
B6442173226.886060%
C64424717.311394%
D64423825.929835%

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 7567 6443 45 45 0.59% 0.70%
B 7567 6443 1154 1154 15.25% 17.91%
C 7567 6443 322 322 4.26% 5.00%
D 7567 6443 288 288 3.81% 4.47%

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 824593 4502.9 751 732 183.0
A 13 254 12624 65.0 751 732 183.0
A 4 3 11842 60.72 751 732 183.0
B 6 255 3637889 26272.93 645 620 138.4
B 2 249 597867 4314.07 645 620 138.4
B 4 236 180035 1295.96 645 620 138.4
C 12 252 1341108 6977.42 701 694 192.1
C 3 233 154888 802.65 701 694 192.1
C 6 223 56563 290.82 701 694 192.1
D 12 110 1560138 7725.18 711 677 201.9
D 7 222 250947 1239.77 711 677 201.9
D 2 249 209997 1036.92 711 677 201.9

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