ASTROSAT CZTI

Data Quality Report

Orbit 20230609_A12_035T02_9000005680_level2

Creation date: 2026-01-05T22:06:18.854118
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/AS1A12_035T02_9000005680cztM0_level2.fits modeM0/AS1A12_035T02_9000005680cztM0_level2_quad_clean.evt
Size (bytes)135,483,840159,284,160
Size129.2 MB 151.9 MB
Events in quadrant A831,0421,067,121
Events in quadrant B802,2601,069,426
Events in quadrant C811,3141,001,057
Events in quadrant D564,762595,085

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03240
B03240
C03240
D03240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0341390
B0337100
C0355740
D0910390

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0550
B0550
C0550
D0570

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15802410.259461%
B158021601.012530%
C158023492.208581%
D15802658941.697254%

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 69749 15800 0 0 0.00% 0.00%
B 69749 15801 0 0 0.00% 0.00%
C 69749 15786 0 0 0.00% 0.00%
D 69749 15778 0 0 0.00% 0.00%

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 95 679 8.35 217 203 57.0
A 7 110 672 8.23 217 203 57.0
A 0 29 663 8.07 217 203 57.0
B 2 9 735 12.3 212 202 43.3
B 2 8 596 9.09 212 202 43.3
B 5 232 571 8.52 212 202 43.3
C 3 202 662 8.14 214 200 56.8
C 3 203 634 7.65 214 200 56.8
C 1 81 618 7.36 214 200 56.8
D 10 113 418 6.03 161 147 45.0
D 7 3 409 5.83 161 147 45.0
D 6 38 402 5.67 161 147 45.0

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