ASTROSAT CZTI

Data Quality Report

Orbit 57889

Creation date: 2026-06-10T06:02:03.596036
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_125T11_9000006582_57889cztM0_level2.fits modeM0/AS1A14_125T11_9000006582_57889cztM0_level2_quad_clean.evt
Size (bytes)497,309,76091,059,840
Size474.3 MB 86.8 MB
Events in quadrant A2,739,742642,157
Events in quadrant B3,299,145679,383
Events in quadrant C3,370,732596,361
Events in quadrant D8,491,096384,247

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132612
B0144542
C0149243
D0299802

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6526270.413730%
B65261251.915415%
C6525961.471264%
D6525218233.440613%

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 7616 6527 1 1 0.01% 0.02%
B 7616 6527 49 49 0.64% 0.75%
C 7615 6526 70 70 0.92% 1.07%
D 7615 6525 2082 2082 27.34% 31.91%

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 16898 94.07 696 678 172.4
A 3 245 10091 54.59 696 678 172.4
A 7 64 10021 54.19 696 678 172.4
B 5 172 305578 2076.04 686 662 146.9
B 7 252 60806 409.49 686 662 146.9
B 10 247 55065 370.41 686 662 146.9
C 15 224 592634 3272.17 666 661 180.9
C 14 254 70156 384.14 666 661 180.9
C 6 223 46954 255.89 666 661 180.9
D 12 110 5167955 32072.03 565 537 161.1
D 8 160 492215 3051.64 565 537 161.1
D 8 240 277050 1716.2 565 537 161.1

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