ASTROSAT CZTI

Data Quality Report

Orbit 20221016_C07_001T12_9000005366_level2

Creation date: 2026-01-05T21:00:36.639958
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/AS1C07_001T12_9000005366cztM0_level2.fits modeM0/AS1C07_001T12_9000005366cztM0_level2_quad_clean.evt
Size (bytes)826,453,4401,250,642,880
Size788.2 MB 1.2 GB
Events in quadrant A4,964,9528,290,795
Events in quadrant B4,809,2048,303,248
Events in quadrant C4,899,2527,941,707
Events in quadrant D4,204,7787,195,917

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02010460
B01923860
C01879670
D02129390

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03590
B03590
C03590
D03590

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A018360
B018360
C018360
D018360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A897323130.348816%
B897277820.871533%
C897323360.374448%
D8973215811.761913%

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 125624 89733 0 0 0.00% 0.00%
B 125624 89725 0 0 0.00% 0.00%
C 125624 89725 0 0 0.00% 0.00%
D 125624 89678 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 7 110 4188 9.17 1299 1226 322.9
A 9 19 4097 8.89 1299 1226 322.9
A 0 29 4005 8.61 1299 1226 322.9
B 2 9 4066 11.52 1274 1220 247.1
B 3 80 3725 10.14 1274 1220 247.1
B 5 255 3472 9.11 1274 1220 247.1
C 1 81 4150 8.85 1296 1224 330.8
C 1 80 4045 8.53 1296 1224 330.8
C 3 202 3911 8.12 1296 1224 330.8
D 7 3 3122 6.19 1208 1101 326.4
D 6 62 3060 6.0 1208 1101 326.4
D 10 189 3057 5.99 1208 1101 326.4

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