ASTROSAT CZTI

Data Quality Report

Orbit 57460

Creation date: 2026-05-12T11:12:52.550960
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_57460cztM0_level2.fits modeM0/AS1A14_113T09_9000006574_57460cztM0_level2_quad_clean.evt
Size (bytes)1,387,987,200220,296,960
Size1.3 GB 210.1 MB
Events in quadrant A8,682,7891,405,528
Events in quadrant B13,536,1041,476,574
Events in quadrant C13,812,9251,274,952
Events in quadrant D13,833,2921,164,404

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03960
B03960
C03960
D03960

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0403733
B0540003
C0541093
D0545643

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A195602441.247444%
B1956118389.396248%
C195619985.101989%
D1956111415.833035%

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 21149 19850 8 8 0.04% 0.04%
B 21150 19850 875 875 4.14% 4.41%
C 21150 19848 619 619 2.93% 3.12%
D 21150 19851 826 826 3.91% 4.16%

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 13 153 166224 313.1 2146 2090 524.2
A 3 14 76471 141.89 2146 2090 524.2
A 3 128 56565 103.92 2146 2090 524.2
B 4 206 4381224 9944.46 2056 1977 440.4
B 5 185 260409 586.85 2056 1977 440.4
B 10 247 232027 522.4 2056 1977 440.4
C 15 224 4169881 7583.94 2042 2025 549.6
C 14 67 402842 729.34 2042 2025 549.6
C 1 16 286012 516.75 2042 2025 549.6
D 15 142 1824442 3210.27 2038 1948 567.7
D 7 96 1325377 2331.18 2038 1948 567.7
D 3 12 759514 1334.43 2038 1948 567.7

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